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Crumbtrail TV Forums: TV Equipment: TV Repair Forum:
Magnavox 27MT3305/17 HELP! :)

 

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tAnK
New User

Dec 29, 2009, 2:36 AM

Post #1 of 34 (4412 views)
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Magnavox 27MT3305/17 HELP! :) Can't Post

I have a:

Magnovox 27 inch TV

Model: 27MT3305/17
Chassis: L03 1U AA

There is about a 2 inch thick line at the top of the tv. It is a horizontal white line that is way brighter than the rest of the screen. Everything below it works fine. It usually cuts of people heads or any network logos etc.

It started about a week ago. I just turned it on one day and it started to happen. I dont believe it has got worse since the first day. Its consistent.

I dont know anything about TV repairs but i do run my own computer repair shop and I am willing to learn.

Can someone please help me please? After Christmas, it is not in my budget in the near future to purchase a new tv.

here is a picture:





jts1957
Veteran


Dec 29, 2009, 11:44 AM

Post #2 of 34 (4401 views)
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Re: [tAnK] Magnavox 27MT3305/17 HELP! :) [In reply to] Can't Post

C2465 10ufd 160volt
D6460 surface mount diode sometimes short with the cap.Wink


-------------------------
Location: Far, Far Away


tAnK
New User

Dec 30, 2009, 12:53 AM

Post #3 of 34 (4395 views)
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Re: [jts1957] Magnavox 27MT3305/17 HELP! :) [In reply to] Can't Post

Can someone explain what that means? I dont know anything about tv repair but I am willing to put the time in to learn.

Thanks ahead :)


jts1957
Veteran


Dec 30, 2009, 1:11 AM

Post #4 of 34 (4393 views)
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Re: [tAnK] Magnavox 27MT3305/17 HELP! :) [In reply to] Can't Post

C2465 10ufd 160volt

C2465 is the "location" number of the part in question; 10ufd is the "value" of the part in question; 160 volt is the "voltage rating" of the part in question.
Look on the main board, you'll see many parts, they each should have a location number stamped (silk screened - sometimes on top, sometimes on bottom, sometimes both) on the board. Match location number with part ratings.


-------------------------
Location: Far, Far Away


tAnK
New User

Dec 30, 2009, 1:34 AM

Post #5 of 34 (4391 views)
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Re: [jts1957] Magnavox 27MT3305/17 HELP! :) [In reply to] Can't Post

So i would just take apart my tv, find the capacitor, solder if off and replace it with a new one, put it back together and tada?


And thank you JTS i just realized you were the same person on the other forum lol. I was wondering why 2 people posted the exact same sentence lol.


jts1957
Veteran


Dec 30, 2009, 1:48 AM

Post #6 of 34 (4388 views)
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Re: [tAnK] Magnavox 27MT3305/17 HELP! :) [In reply to] Can't Post

User Name usually gives it away.

Careful desoldering/soldering, too much heat for too long can lift foils.Wink


-------------------------
Location: Far, Far Away

(This post was edited by jts1957 on Dec 30, 2009, 1:49 AM)


Gus67
User

Dec 30, 2009, 3:00 AM

Post #7 of 34 (4382 views)
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Re: [jts1957] Magnavox 27MT3305/17 HELP! :) [In reply to] Can't Post

JTS...

You must spend a LOT of time working on TV's to hammer out an answer like that.

After reparing my set (and being told I am not qualified to do so) I cannot help but pop in and read some of these posts.They amaze me...you guy's must live and breath TV repair....you and Ron dominate this site with your wisdom.It boggles my mind someone actualy is so into one category of electronics that you do not test you skill at something else...

Don't you guy's want to tell this guy he's over his head swapping out a bad Cap?

Oh yea...I almost forgot,so everyone does not think I am an a..hole...Sly


jts1957
Veteran


Dec 30, 2009, 3:35 AM

Post #8 of 34 (4377 views)
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Re: [Gus67] Magnavox 27MT3305/17 HELP! :) [In reply to] Can't Post

Gus67:

Quote
Don't you guy's want to tell this guy he's over his head swapping out a bad Cap?



I'm not sure, but I think I'm being dissed?

tAnK:

Quote
i do run my own computer repair shop and I am willing to learn.


He says he has his own computer business and is willing to learn. I have no problem with that. Mostly key punching, installing software, troubleshooting same. Hardware installation mostly "plug-n-play," but I'm sure there is an occasional need to do soldering, especially if recapping mother boards.


-------------------------
Location: Far, Far Away


Gus67
User

Dec 30, 2009, 5:09 AM

Post #9 of 34 (4375 views)
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Re: [jts1957] Magnavox 27MT3305/17 HELP! :) [In reply to] Can't Post

JTS..

I was not "dissing" I was making a forecast of what I thought would eventually be posted.If not by you by someone else.

I would assume if the guy owns a pc repair shop he would have to have at least a comprehensive backround in Electronics.

Maybe instead of removing and replacing the supected bad cap,he could tack(solder in parallel ) a known good Cap on the solder side of the pcb to see if the problem changes? That is of course he has easy access to the bottom of the pcb.

Who wants to take a board out,swap a component and hope for the best.If you are wrong you wasted at least 1/2 hr and, like you said, risk damage to the tracks.Quicly tacking a KGC (known good component) on the underside of the pcb would be a safer bet.If the cap is not visibly damaged.

I assume the Cap is Electrolytic so he would also need to be aware of the polarity of the Cap... is that correct? Would you not agree that would be a fast and effective task?Wink


tAnK
New User

Dec 30, 2009, 11:54 AM

Post #10 of 34 (4371 views)
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Re: [Gus67] Magnavox 27MT3305/17 HELP! :) [In reply to] Can't Post

I have done small repairs on motherboards but nothing too big, just sodering a ac adapter or replace some broken wires and soder them back onto the board.

If you think this is over a new-b's head please let me know, i wouldnt want to damage it any further but liek i said i am willing to do the work if its not too hard. Replacing a capacitor does not seem too hard.

I also found this link that coincides with your advice:


http://www.fixya.com/...tv_model_27mt3305_17

thanks for your repleis guys :DAngelic


jts1957
Veteran


Dec 30, 2009, 12:29 PM

Post #11 of 34 (4368 views)
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Re: [tAnK] Magnavox 27MT3305/17 HELP! :) [In reply to] Can't Post

NOTE which way cap is facing. It does have a polarity (most boards are marked with a "+" by the positive lead; most caps are marked with a stripe &/or "-" on their case).
Heat one cap joint. As soon as it melts push cap towards its other lead. This should remove one lead completely. Grab cap, heat remaining lead and pull cap off the board. Take a piece of solder braid/wick and clean foils so that both holes are clear. Install replacement, solder, cut leads and reassemble set enough to try out.

Class dismissed.Cool


-------------------------
Location: Far, Far Away

(This post was edited by jts1957 on Dec 30, 2009, 12:30 PM)


Gus67
User

Dec 31, 2009, 1:12 AM

Post #12 of 34 (4356 views)
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Re: [tAnK] Magnavox 27MT3305/17 HELP! :) [In reply to] Can't Post

It's not that hard.Swap it out and see what happens.

My sugestion of soldering a cap in parallel would be a quick and effective technique.However,I cannot guess on the outcome.If the Cap is open then my suggestion would work.If the Cap is a dead short it could lead you in a different path in finding out the solution to the problem.

Take JT's advice and swap the suspected bad component..He is obviously well seasoned in this field.


jts1957
Veteran


Dec 31, 2009, 4:22 AM

Post #13 of 34 (4350 views)
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Re: [Gus67] Magnavox 27MT3305/17 HELP! :) [In reply to] Can't Post

And if the cap is Good, you've doubled the value of capacitance (presuming you're putting same value as on the board).Wink

Using a 100ufd as the cap you're trying to bridge:
100ufd across an open cap = 100ufd
100ufd across a shorted cap = 0ufd
100ufd across a Good cap = 200ufd


-------------------------
Location: Far, Far Away

(This post was edited by jts1957 on Dec 31, 2009, 4:23 AM)


yorled
User

Jan 1, 2010, 4:20 PM

Post #14 of 34 (4331 views)
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Re: [tAnK] Magnavox 27MT3305/17 HELP! :) [In reply to] Can't Post

Hi Gus and Jts,
The electronic "who knows best", battle between the both of you,I think augers well for this forum.I am a novice in this business (tv)and VERY WILLING to learn and I,personally,find both of your argument interested as I have learnt a lot!!!!!
I was taking side with Gus because is argument/suggestion sound well but when you,JTS, stepped up to the plate, it was a different ball game so I had to change side. The examples you gave was a mouthful.
I think we need more debates like this,when people with their "know how" can come forward and share their knowledge and people like me(novice)will filter those information and run with the best.
Thank you both and all who contribute to the forum and let us try to make it better for 2010.
Catch ya!!!!


Ron.M
Veteran


Jan 1, 2010, 8:43 PM

Post #15 of 34 (4315 views)
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Re: [ALL] Magnavox 27MT3305/17 HELP! :) [In reply to] Can't Post

tAnK , Gus67 , jts1957 & yorled:....

tAnK;...

Take jts1957's advice & do it his way....
With all due respect to Gus67 , there's a small risk
factor doing it his way....
Sometimes the easiest way isn't neccesarily the
correct way of doing things...
The cap (C2465) is 99.9998% most likely causing the problem....
0.0002% justs covers my butt ...Wink....


Gus67;...

Quote
Take JT's advice and swap the suspected bad component..
He is obviously well seasoned in this field.

Good to see you come around to listening to a SOLID Advisor !!!...
On this website , I've found no one better than jts1957 !!!!


Everybody:....

I wish you a Happy , Healthy , Prosperous
& Safe New Year !!!...Sly....



Later...Ron.M...Cool....



Veteran & Retired TV technician

(This post was edited by Ron.M on Jan 1, 2010, 8:47 PM)


Gus67
User

Jan 2, 2010, 5:21 PM

Post #16 of 34 (4290 views)
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Re: [Ron.M] Magnavox 27MT3305/17 HELP! :) [In reply to] Can't Post

Doubling the capacitance would probably not hurt the circuit and would quickly put you on track to seeing if that was the problem or not.

It's a quick and MOST OF THE TIME effective troubleshooting trick I LIKE TO USE and was sharing.

Ron,

I have not "come around" to anyone....you guy's are just replacing knowlege with experience


Solid advice is solid advice.JTS has obviously seen this problem many times.I would not want to steer anyone in the wrong direction because of my ego


Ron.M
Veteran


Jan 2, 2010, 7:54 PM

Post #17 of 34 (4279 views)
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Re: [Gus67] Magnavox 27MT3305/17 HELP! :) [In reply to] Can't Post

Gus67;...

Lets get a few things straight here.....

Quote
Doubling the capacitance would probably not hurt the circuit and would quickly put you on track to seeing if that was the problem or not.

That "probably" is the case....
Keep in mind who you are dealing with...
This poster does not have any TV experience...
If he was to go & double the value of the wrong cap , he could "probably" cause more damage....
That IMHO is not worth the risk for a novice to take....
The advice you gave would be satisfactory for someone who has some basic experience with TV servicing...
SOOoo , how about we give 100% , not 95% , safe advice.....
The advice that jts1957 instituted & I backed him up on IS/WAS solid advice for a beginner to follow safely....




Quote
It's a quick and MOST OF THE TIME effective troubleshooting trick I LIKE TO USE and was sharing.


It's a trick that "experienced" Tech's use....
Keep in mind 3 important things when using that trick;..
#1=The value of the cap you are substituting for...
#2=The value of the cap you are substituting with...
#3=The circuit you are doing this in...
Even if you follow those rules , there's still a risk that you can blow out a critical circuit....This advice from someone who has been there , done that !!!



Quote
After reparing my set (and being told I am not qualified to do so) I cannot help but pop in and read some of these posts.
They amaze me...you guy's must live and breath TV repair....you and Ron dominate this site with your wisdom

I'm the one who said I thought you weren't qualified....I had a valid reason at the time....IMHO , jts1957 & I do NOT dominate ANYTHING here...That is just your opinion....We just like to help people.....




Quote
Don't you guy's want to tell this guy he's over his head swapping out a bad Cap?

NO , not at this point , I for one , don't think he is...That can change , tho....



Please note what jts1957 quoted in his reply to you:=>

Quote
tAnK:

Quote
i do run my own computer repair shop and I am willing to learn.


He says he has his own computer business and is willing to learn. I have no problem with that. Mostly key punching, installing software, troubleshooting same. Hardware installation mostly "plug-n-play," but I'm sure there is an occasional need to do soldering, especially if recapping mother boards.

This guy at least has "some" electronic experience & can "probably" be helped....No reason yet to think that he's in over his head...


Now this;=>
Gus67 said;=>

Quote
I have not "come around" to anyone....you guy's are just replacing knowlege with experience



But he said this first;=>

Quote
Take JT's advice and swap the suspected bad component..He is obviously well seasoned in this field.


TA-DA !!!!! You "switched" from reccommending your advice to reccommending jts1957's advice... To me & thousands out there , that's "coming around"....Not that that's bad or anything , just sensible...




Quote
Solid advice is solid advice.JTS has obviously seen this problem many times.I would not want to steer anyone in the wrong direction because of my ego

jts & I have seen this problem thousands of times....
We both try to give good & solid advice....
Your advice WAS/IS good advice...NO doubt about it...
It , however , IMHO does not fit this poster well.....
With all due respect , you & I have had some "go arounds" in the past....
I would like to leave them there, but....
You do appear to have an "ego" problem...


Oh , yeah , happy new year....


Later...Ron.M....Cool....
Veteran & Retired TV technician


Gus67
User

Jan 2, 2010, 10:53 PM

Post #18 of 34 (4271 views)
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Re: [Ron.M] Magnavox 27MT3305/17 HELP! :) [In reply to] Can't Post

Ron,

Whatever you say...You are the man with all the answers.You are FAR SUPERIOR to me...

It appears to me that you always have to have the final word.If it make you feel better by "putting me in my place",than so be it...you told me....

Remeber,this is a forum...not the playgroud.

I hope the guy has luck with the tv..


jts1957
Veteran


Jan 2, 2010, 11:24 PM

Post #19 of 34 (4264 views)
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Re: [Gus67] Magnavox 27MT3305/17 HELP! :) [In reply to] Can't Post

Could use the "Check Spelling" feature.Angelic


-------------------------
Location: Far, Far Away


Gus67
User

Jan 2, 2010, 11:38 PM

Post #20 of 34 (4261 views)
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Re: [jts1957] Magnavox 27MT3305/17 HELP! :) [In reply to] Can't Post

JTS,
Again,it's a forum...not English class.

I got my point across

As long as we are still on the playground.....

I guess you told me too..you are a smart feller...or a fart smeller...take your pick.


Ron.M
Veteran


Jan 2, 2010, 11:58 PM

Post #21 of 34 (4258 views)
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Re: [Gus67] Magnavox 27MT3305/17 HELP! :) [In reply to] Can't Post

Gus67;....

This is it as far as you & I go....
Your ego is running wild again....
& so is your temper !!!


Quote
Whatever you say...You are the man with all the answers.You are FAR SUPERIOR to me...

That is just dripping with sarcasm & you know that's a huge load of BS....



Quote
It appears to me that you always have to have the final word.If it make you feel better by "putting me in my place",than so be it...you told me....

You got "putting me in my place" confused with enlightening you to some facts you have a hard time understanding....
If you read it again with an open mind , you'll see it was not the ass-chewing commentary you think it is...




Quote
Remeber,this is a forum...not the playgroud.

Just what I needed to hear from a guy who has been here 5 whole wonderful weeks:=>

Gus67;..
New User Status: <<<
Registered User Registered: Nov 23, 2009, 4:22 AM<<<Note the year...
Last Logon: Jan 3, 2010, 10:46 AM Posts: 38 (0.9 per day)
Real Name: No name entered.
Location: No location entered.
Local Time: Jan 3, 2010, 7:22 PM
Email: No email entered.


Versus;...

Ron.M;...
Enthusiast Status: <<<
Registered User Registered: Jan 30, 2009, 11:27 AM <<< Note the year !!!
Last Logon: Jan 3, 2010, 6:32 AM Posts: 506 (1.5 per day)
Real Name: No name entered.
Location: North Las Vegas, Nev....
Local Time: Jan 3, 2010, 11:30 AM
Email: No email entered.


Finally , & I DO mean FINALLY , you have an anger management
problem that regulary rears it's ugly head on this forum...
Especially towards me....
I WILL not tolerate it...
I intend to avoid you where ever I see your posts...
That may not sound like much , but, you'll dig some deep holes
to climb out of & I'll enjoy watching you try....


Late EDIT:

Quote
I got my point across

What the hell are you talking about ????...That was a rant !!!!



Ron.M....Good bye....
Veteran & Retired TV technician

(This post was edited by Ron.M on Jan 3, 2010, 12:03 AM)


Gus67
User

Jan 3, 2010, 12:08 AM

Post #22 of 34 (4252 views)
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Re: [Ron.M] Magnavox 27MT3305/17 HELP! :) [In reply to] Can't Post

   
Ron,
I would not call what I wrote a rant...

what you wrote, was what "I" would call a "rant"

Again...you know it all.Whatever..

Did this guy change that Cap yet?


Ron.M
Veteran


Jan 3, 2010, 1:49 AM

Post #23 of 34 (4244 views)
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Re: [Ron.M] Magnavox 27MT3305/17 HELP! :) [In reply to] Can't Post

jts1957;.....

As you probably know , Gus67 & I have locked horns before....
He definitely has a temper & is hard to get answers from
(See thread)(Link below) that could help him along...
He has a problem following instructions from Tech's
better qualified than he is...
He can NOT take positive advice well at all....
He does not like to be corrected at all...
He's "probably" still pissed at me because I
refused to give him the "Factory Menu" code for that set...
He wanted to go in there & dink around...
And on & on & on....
So his lame statement is "Again...you know it all.Whatever""
Something a 6 year old would say...


jts1957;...
I did not care for the way he treated you...

Here's the link in case you'd like to read it all;=>
http://www.tv-forums.com/...cgi?post=59984#59984

There's 44 posts & I'm not going to pick & choose
the ones needed to make my point...
If you decide not to read it , no problem with me....
If you do read it , you'll see whose telling the truth...

One last jab here thats too good to pass up;=>>

Quote
Did this guy change that Cap yet?

WHAT the HELL difference does it make to you...The cap & it's location was NOT YOUR idea !!!!!...Sly....



Quote
Oh yea...I almost forgot,so everyone does not think I am an a..hole...Sly

THIS >Sly< does NOT remove ANY doubt that you ARE an a..hole...



Later...Ron.M....Cool....

Veteran & Retired TV technician


Gus67
User

Jan 4, 2010, 8:02 PM

Post #24 of 34 (4219 views)
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Re: [Ron.M] Magnavox 27MT3305/17 HELP! :) [In reply to] Can't Post

Ron,

Did you invent television? with your behavior one might think you did...


If you have not figured it out yet..what I am doing to you is called "B*ll Busting"

You know your televisions,I will give you that.However,you are extremely arrogant and condescending.Two characteristics I cannot stand in a person


Do you think I am angry about you not sharing your knowledge? Do you think you are the only person who can solve technical questions about television repair on the web?


You probably do.


ll the only reason I keep coming back is to read your banter you post.And to bust your b**ls.You are possibly the most arrogant person I have come across in any forum,on any topic on the entire web.

Congratulations....you are #1 at something..


When is this guy gonna swap that Cap out?


tAnK
New User

Jan 7, 2010, 2:54 AM

Post #25 of 34 (4190 views)
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Re: [Gus67] Magnavox 27MT3305/17 HELP! :) [In reply to] Can't Post

Hey guys, well i'm set to do it on thursday and i am currently calling around to find the capacitor and 2 local electronic stores do not have the exact cap but recommended a 22ufd/160volt. Would that work or should i keep looking or perhaps order it online?

Also, don't let Ron get to you Gus. Thanks for your advice as well Ron but that was not the proper way to give our your opinions, it was quite rude and inappropriate.

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