rca f38310jx4


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rca f38310jx4

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ld762n
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Oct 11, 2011, 6:10 PM

Post #1 of 15 (2788 views)
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rca f38310jx4	Can't Post

I bought this tv for 20 dollars but wasn't able to check its working condition before. I was told that it did work. I did not come on when I tried it afterward. I removed the back and found the 6A fuse blown. When I tried it after it made a popping sound with electical arc on the main board and blew the fuse. I removed the main board and upon inspecting it I found q14601 transistor blown as well as r14604 (15ohm 1/2w flameproof resistor). I consulted the web and found this to be a common problem with seven components listed to check or replace. I decide to go ahead and just replace them all. However I am having a difficult time crossing over the transistors from rca numbers. Any help would be greatly appreciated.
Position RCA part # Crossed
q14601 201152 ??????NTE3n60????????
q14603 232218 ?????NTE287??????????
cr14613 236168 12v Zener Diode 1.3w 1n4742a-tap
cr14615 227887 5.1v Zener Diode 1.3w 1n4733a-tap
cr14611 227066 Fast Recovery Diode 1A 200v mur120g
r14604 241313 15ohm 1/2w flameproof resistor
r14606 215212 3ohm 3w resistor
I can't find the a good cross for the transistors and I would rather be sure. The transistors are to burned to read so no luck there. Thanks

jts1957
Veteran

Oct 11, 2011, 8:45 PM

Post #2 of 15 (2778 views)
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Re: [ld762n] rca f38310jx4 [In reply to]	Can't Post

So why not order/search by RCA part numbers? I fond a number of places that say the have them, but I didn't notice one place having both "In Stock."

Example:

Q14601

Part Number 201152
Description Transistor
Substitute Part n/a
Estimated Weight 1 lb(s).

Total Availability 0
Estimated Ship Date 10/17/2011 or 6 days
On Vendor Purchase Order No
Core Price 0.00
Part Price 16.24
Total Price 16.24
Order Quantity
Equivalents according to Encompass

Manufacturer Part Number Description Total Availability Part Price
Nte Electronics 2387 Mosfet-pwr 800V 4A 0 13.07
Japanese Semi's BUF410A Transistor 0 19.95

Q14603

Part Number 232218
Description Transistor
Substitute Part n/a
Estimated Weight 1 lb(s).

Availability by Warehouse
Atlanta, GA 5

Total Availability 5
Estimated Ship Date In Stock
Core Price 0.00
Part Price 2.50
Total Price 2.50
Order Quantity

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

Ron.M
Veteran

Oct 11, 2011, 9:14 PM

Post #3 of 15 (2777 views)
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Re: [ld762n] rca f38310jx4 [In reply to]	Can't Post

ld762n;.....

How about;=>....
http://www.ebay.com/...201152-/350457153800
That one looks to be an exact replacement...
PM this seller because he has only 3 listed as available , yet he sold 6 ...
His seller rating is high (99.9%) , so he should be VERY trustworthy...
$4.99 & FREE shipping !!!

I crossed this q14601 201152 ??????NTE3n60???????? to NTE 2387 here;=>...
http://nte01.nteinc.com/...sf/$$Search?OpenForm
Scroll down a bit & enter MTP3N60 in the search box & you'll come up with the NTE replacement number...

As for , q14603 232218 ?????NTE287?????????? , I could not find the generic number...
IF you Google;=>..."RCA 232218" you'll get about 8,280 listings...
There are some that have the part for ~$5.00....
Your choice & call...

Hope this helps....

Have a GREAT day & week.... Sly

...

GOOD LUCK.... Sly

....

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

...
Veteran & Retired TV technician

ld762n
New User

Oct 22, 2011, 8:05 PM

Post #4 of 15 (2737 views)
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Re: [ld762n] rca f38310jx4 [In reply to]	Can't Post

Ok I finally received all the parts and put them in. Good news is the fuse doesn't blow. Bad news is the set still doesn't start. The power button lights green I can see the red light within the digital audio jack on I can even see a red led within the tuner tin can flashing. I do hear a sound like an arc six times fast stop six times fast over and over. The red led in the tuner will flash to this sequence. No HV so I'm sure it's still in the power supply but not sure what to check and with my "advanced diagnostic tool supply", a dmm, its getting fun. Any suggestions what to check from here. Where should I check for my voltages on this set? Thanks

Ron.M
Veteran

Oct 22, 2011, 9:55 PM

Post #5 of 15 (2734 views)
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Re: [ld762n] rca f38310jx4 [In reply to]	Can't Post

ld762n;....

I found this while looking for a FREE service manual for your TV...
Did NOT find one... Unsure

...

This goes to Just Answer TV...
For your exact TV...& maybe the same problem ...
Scroll down about half way to get some free help that someone else most likely paid for...

( EDIT:.... Deleted link that went south...) ..Sorry.... Unsure

....

GOOD LUCK.... Sly

....

Have fun.... Smile

...

Also have a GREAT day & weekend... Sly

....

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

....
Veteran & Retired TV technician

(This post was edited by Ron.M on Oct 28, 2011, 12:06 AM)

ld762n
New User

Oct 27, 2011, 8:13 PM

Post #6 of 15 (2696 views)
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Re: [Ron.M] rca f38310jx4 [In reply to]	Can't Post

Thanks for the reply. The link is dead though. Still having fun with it. I think I need to find and make sure all of my standby voltages are ok. I'm thinking that one of them is not correct or missing. Kind of a more complicated tv with the DM1 and secondary power supply to it. Has me wondering if the caps on the DM1 are shot. I've read of them causing a problem. Not sure but I don't think this tv will come on without the DM1 and DM1 power supply in working order. So two power supplies to trouble shoot with no schematic lol. Thanks for the help.

ld762n
New User

Oct 27, 2011, 8:17 PM

Post #7 of 15 (2695 views)
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Re: [ld762n] rca f38310jx4 [In reply to]	Can't Post

Does anyone know the standby voltages on this unit. The values and places to check would be greatly appreciated. Also can anyone point me in the right direction to pick up the schematics for the f38310jx4/DTV306?

jts1957
Veteran

Oct 27, 2011, 10:07 PM

Post #8 of 15 (2691 views)
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Re: [ld762n] rca f38310jx4 [In reply to]	Can't Post

Ron;
I agree. You're posting dead links too early. Halloween is next week.

Service manual;
http://elektrotanya.com/...07.pdf/download.html

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

(This post was edited by jts1957 on Oct 27, 2011, 10:08 PM)

Ron.M
Veteran

Oct 28, 2011, 12:03 AM

Post #9 of 15 (2685 views)
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Re: [jts1957] rca f38310jx4 [In reply to]	Can't Post

jts1957 & ld762n;....

It was a live & valid link when I posted it...
I checked it out with "Preview Post"....
Even checked it in the thread after I posted it...
Worked perfect ....
It had to go off it's trolley in the meantime....
I had a feeling that I should have copied & pasted the article at the time , but , it was rather lengthy...
Some of it had to do with arcing in the CRT socket focus pins...
You might want to take a looksee there...

Live & loin.... Unsure

....

GOOD LUCK..... Sly

.....

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

...
Veteran & Retired TV technician

(This post was edited by Ron.M on Oct 28, 2011, 12:08 AM)

ld762n
New User

Oct 28, 2011, 3:04 AM

Post #10 of 15 (2675 views)
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Re: [Ron.M] rca f38310jx4 [In reply to]	Can't Post

Many thanks for the complete schematics and all help. I went to the test points off the t14600 transformer. TP14107 5v Standby, TP14108 33v Standby, and TP109 -12v Standby. All of the voltages are floating around a bit. TP14107 is from 0 to 4.8v, TP108 is from 33 to 36v and TP14108 is from -10 to -12v. All of them have diodes off of the transformers and I was debating desoldering a leg on each to see if the voltages stabilized. Good idea on this or any other suggestions ty....

jts1957
Veteran

Oct 28, 2011, 5:45 AM

Post #11 of 15 (2667 views)
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Re: [ld762n] rca f38310jx4 [In reply to]	Can't Post

Q14602 was checked?

Sounds like PS is cycling on/off.

Check: CR14129; Q14451

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

(This post was edited by jts1957 on Oct 28, 2011, 6:10 AM)

ld762n
New User

Oct 28, 2011, 11:22 PM

Post #12 of 15 (2646 views)
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Re: [jts1957] rca f38310jx4 [In reply to]	Can't Post

Ok I'm checking q14602. Should I remove it completely? I'm checking with a dmm. However r14603 has me confused. On the schematics it is showing a 3300 ohm resistor. In the parts list a 1k. The color code is 1k and the resistance is 990 ohm. I'm assuming, lol, that it should be a 1k and the schematic is wrong. Correct?

jts1957
Veteran

Oct 28, 2011, 11:31 PM

Post #13 of 15 (2645 views)
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Re: [ld762n] rca f38310jx4 [In reply to]	Can't Post

I usually remove completely.

Schematic may not show all variants for the various chassis / screen sizes, etc. I'd go with what is installed originally.

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

ld762n
New User

Oct 29, 2011, 11:09 PM

Post #14 of 15 (2637 views)
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Re: [jts1957] rca f38310jx4 [In reply to]	Can't Post

q14602 is looking good. However when I check, by dmm method, q14601 (fet transistor) seems to have a 15 ohm connect gate to source. Also I found cr14615, zener diode, acted like a regular diode with no break down.

odona
New User

Nov 1, 2011, 7:58 AM

Post #15 of 15 (2615 views)
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Re: [jts1957] rca f38310jx4 [In reply to]	Can't Post

thans for the post
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