JVC 48" Problem


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JVC 48" Problem

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MrSlithers
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Nov 15, 2010, 8:02 AM

Post #1 of 17 (2520 views)
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JVC 48" Problem	Can't Post

I've searched my livin booty off and can't seem to find an answer. I just got this TV for free from a buddy as long as I got it out of his garage. It's a JVC 48" 48wp74. The red and green work great but the blue has a streak that runs through the screen. I have no idea what it might be. I emailed a few tv repair shops to no avail.... I went to the convergance thing and the blue was pretty out of whack. I would marry the person that figures this out as im tired of watching my 22" LCD from 20 feet hahaha.

Ron.M
Veteran

Nov 15, 2010, 8:00 PM

Post #2 of 17 (2517 views)
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Re: [MrSlithers] JVC 48" Problem [In reply to]	Can't Post

MrSlithers;....

Quote

but the blue has a streak that runs through the screen. I have no idea what it might be.

Neither do we .....
IF you could post a few pix of the problem , I'm sure it would help us out in figuring out what your problem is....

Quote

I went to the convergance thing and the blue was pretty out of whack.

May or may not be a convergence problem....

Quote

I would marry the person that figures this out ...

I for one will pass.....
Just a "Thank you" is enough....

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

....
Veteran & Retired TV technician

MrSlithers
New User

Nov 16, 2010, 12:05 AM

Post #3 of 17 (2509 views)
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Re: [Ron.M] JVC 48" Problem [In reply to]	Can't Post

Ron.M
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Nov 16, 2010, 12:50 AM

Post #4 of 17 (2506 views)
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Re: [MrSlithers] JVC 48" Problem [In reply to]	Can't Post

MrSlithers;....

One of us needs glasses (eyeglasses & NOT beer glasses) & it ain't me..... Wink

....

Care to try that again....
This time , check for clarity (focus) on your camera OR,....
After you paste them in your post , click on the "Preview Post" button located near the center bottom of the area you are typeing in....
It will change to the post you will see in your thread...
If the pix is bad , scroll down & un-paste it & make any changes needed (in your camera) to get a decent pix....
OR re-take the pix....
I can barely make out 2 possible problems , but , need clearer pix to confirm....

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

....
Veteran & Retired TV technician

MrSlithers
New User

Nov 16, 2010, 2:15 AM

Post #5 of 17 (2502 views)
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Re: [Ron.M] JVC 48" Problem [In reply to]	Can't Post

The camera won't focus on the TV. These are about the best I can do... It's just a blue streak as seen in the pictures.

http://img.photobucket.com/...Pavicon/DSC00639.jpg

jts1957
Veteran

Nov 16, 2010, 4:55 AM

Post #6 of 17 (2501 views)
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Re: [Ron.M] JVC 48" Problem [In reply to]	Can't Post

I'll bet one choice is a 1999 movie starring Martin Lawrence and Luke Wilson. Smile

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

MrSlithers
New User

Nov 16, 2010, 5:53 AM

Post #7 of 17 (2499 views)
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Re: [jts1957] JVC 48" Problem [In reply to]	Can't Post

It's the Perfect Storm haha

Ron.M
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Nov 16, 2010, 7:39 PM

Post #8 of 17 (2492 views)
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Re: [MrSlithers] JVC 48" Problem [In reply to]	Can't Post

MrSlithers;.....

Based on that blurry mess I'm looking at ,
#1=..I'd say you have a bad convergence IC (Replace BOTH !!!)....
#2=..Blue focus is out &/OR...Bonus fault=
#3=..contaminated coolant....

To determine #3 , you will have to remove the front screen & look directly into the blue CRT lens...

If you need more info , post....

I'd look for a better camera , get rid of that crappy one you have now...

Good Luck.... Sly

.....

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

....
Veteran & Retired TV technician

keyword
New User

Nov 18, 2010, 3:45 AM

Post #9 of 17 (2486 views)
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Re: [MrSlithers] JVC 48" Problem [In reply to]	Can't Post

Thanks for sharing the useful information.

Friday Night Lights dvd

Friday Night Lights 4
Collect cheap dvd at dvdbestonline

darstr
User

Nov 19, 2010, 10:13 PM

Post #10 of 17 (2473 views)
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Re: [Ron.M] JVC 48" Problem [In reply to]	Can't Post

Ron I agree with issue# 1. I have seen this many times in JVC sets. Normally it is the green though. But all in all. Convergence IC's is the way to go.

MrSlithers
New User

Nov 20, 2010, 11:18 PM

Post #11 of 17 (2466 views)
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Re: [darstr] JVC 48" Problem [In reply to]	Can't Post

Where can I pick up or order new ones?

Ron.M
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Nov 21, 2010, 8:54 PM

Post #12 of 17 (2458 views)
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Re: [MrSlithers] JVC 48" Problem [In reply to]	Can't Post

MrSlithers;......

The ICs you need are STK392-110....
You will need 2 of these....
I reccommend you use ONLY Sanyo replacements as the generics are guaranteed to give you problems...
Also , please don't get cute & replace them with ANY up-grades like STK392-150, again problems VERY possible...

One source;=>...

http://www.mcmelectronics.com/...K392-110-/STK392-110

$16.75 +s&h....

OR;=>....
IF you go the eBay route , this one seems legit....

http://cgi.ebay.com/...mp;ff4=263602_304642

Don't forget heat sink compound;=>....

http://www.mcmelectronics.com/...at%20sink%20compound

Scroll down to item # 20-4505...
$3.09 ea. & enough for your ICs...
You can order them when you order the ICs & save on s&h...(Same company)...
I suggest you get the ICs & heat sink compound from MCM.....

OR find your own suppliers...

Also check ALL 1 &/or 2 watt resistors near the ICs for value...
Some may be burnt or off value due to the IC(s) going bad...
Replace any that are....

OR you can go here & get the whole kit & kaboodle;=>...

http://www.tvrepairkits.com/xcart/home.php?cat=2536

You get this + ;=>

Kit Includes

OEM Sanyo Convergence Chips. Each kit includes the correct replacement convergence chips verified against the service manuals ( STK392-XXX, STK394-XXX etc ). Two chips per kit unless your model uses three - in that case we ship three. These are genuine OEM Sanyo chips. Sanyo was the primary supplier of convergence chips used in TV sets made by Philips, Sony, Hitachi, Panasonic, Toshiba, Mitsubishi, and many others). We do not use lower quality generic convergence chips in our kits like other sites.
Convergence Resistors - These are specifically designed and rated for convergence circuits. Do not use anything but convergence rated resistors when doing these repairs.
Thermal Paste
Photo Instruction Manual - Complete Instructions on how to repair your TV. This is a step by step photo instruction guide that will walk you through each step of the repair. All of our repair guides are non technical and easy to follow. You do not need to have any prior electronic repair experience to use this kit.(Download Version - allows you to view/zoom/print from your computer)
Soldering Instruction Manual - Complete instructions on how learn to solder like a pro in less that 30 minutes.
Email/Phone/Live Chat Support

For $64.95....

Your Call.....

GOOD LUCK..... Sly

....

BTW;.....
Yer Welcome..... Smile

....

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

...
Veteran & Retired TV technician

MrSlithers
New User

Nov 23, 2010, 6:53 AM

Post #13 of 17 (2446 views)
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Re: [Ron.M] JVC 48" Problem [In reply to]	Can't Post

Awesome. Thanks! Im gonna order the parts this week. I found on youtube on how to replace them. I've got 1 more problem though. On alot of the channels, the picture is larger than the screen. I hate it when i'm watching the hockey game and can't see the score or the scroll menu for Charter..... Is there a way to fix that?

Ron.M
Veteran

Nov 23, 2010, 6:24 PM

Post #14 of 17 (2441 views)
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Re: [MrSlithers] JVC 48" Problem [In reply to]	Can't Post

MrSlithers;....

Quote

I found on youtube on how to replace them.

Which way are you going & where are you ordering the ICs from ????

Quote

On alot of the channels, the picture is larger than the screen....
Is there a way to fix that?

Maybe....
How much electronic/TV repair background experience do you have ????
Need honest answer....

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

.....
Veteran & Retired TV technician

jts1957
Veteran

Nov 23, 2010, 10:29 PM

Post #15 of 17 (2437 views)
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Re: [Ron.M] JVC 48" Problem [In reply to]	Can't Post

"He's a logger." Wink

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

Ron.M
Veteran

Nov 23, 2010, 10:47 PM

Post #16 of 17 (2432 views)
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Re: [jts1957] JVC 48" Problem [In reply to]	Can't Post

jts1957;....

He's a WHAT ????

Is he going to solder with a blowtorch & an axe ????

I don't think so .....

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

......
Veteran & Retired TV technician

jts1957
Veteran

Nov 23, 2010, 11:11 PM

Post #17 of 17 (2430 views)
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Re: [Ron.M] JVC 48" Problem [In reply to]	Can't Post

http://www.youtube.com/watch?v=SNr1eZopzZ4

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

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