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l32wd12 Bad power supply or caps?    
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Veldahar69



Joined: 09 Oct 2013
Posts: 2

PostPosted: Wed Oct 09, 2013 5:37 pm    Post subject: l32wd12 Bad power supply or caps? Reply with quote

Hi New to your site. A friend suggest it. Sorry for length:) Set has power but when I try to power on the green on button blinks and I get a blinking white screen that blinks at the same time the green light does. Just a white screen. No clue what is causing this. Any help would be greatly apprciated.
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JTS1957



Joined: 21 Jan 2009
Posts: 2324
Location: Far, Far Away

PostPosted: Wed Oct 09, 2013 6:18 pm    Post subject: Reply with quote

Check fuse on t-con.
Veldahar69



Joined: 09 Oct 2013
Posts: 2

PostPosted: Wed Oct 09, 2013 6:25 pm    Post subject: Reply with quote

Did that seemed fine but replaced anyway. No help. Other things to ck?
curtis wolfe



Joined: 11 Apr 2013
Posts: 27
Location: connecticut

PostPosted: Thu Oct 10, 2013 12:18 pm    Post subject: Reply with quote

RELAY CLICKS, PIX. COMES ON / THEN OFF / REPEATS.........CP616 ON SMALL POWER PCB IN UPPER RIGHT HAND CORNER 470MFD/16V DECREASED IN VALUE. Just a thought.
JELittleton



Joined: 12 Dec 2014
Posts: 1
Location: Southern Oregon

PostPosted: Fri Dec 12, 2014 3:31 pm    Post subject: Confirm Repair Solution Reply with quote

This is an FYI for anyone troubleshooting an RCA L32WD12:

My symptoms were as described: TV powers on (relay clicks) and after about 4 seconds, just as the picture is about to appear, the TV powers off (relay clicks again). The process repeats unattended until A) the TV locks up, powered on with noise on the screen or B) the faulty component warms up enough for the TV to remain on, usually after 3-5 minutes of unattended on/off/on power cycling.

Replacing CP616, plus the other electrolytic capacitors (CP611, CP613, CP614) on the SMPS 1 Watt board resolved this issue for me. I could have replaced just CP616 but none of the capacitors looked bad on this board. To make this a cost-effective repair, I replaced all for less than $5 (including shipping) from Digi-Key.

Also, capacitors on the SMPS Main power supply board (located in the lower right from the back) were bulging on the top. I replaced all caps in the 12 vdc (CS7, CS8, CS32) and 24 vdc section (CS2, CS3, CS43). Replacing these caps did NOT resolve the power on/off/on issue but they required replacement anyway.

Caps replaced on SMPS 1 Watt board

CP616: 470 uf, 16v
CP611: 47 uf 200v
CP613: 22 uf 50v
CP 614: 10 uf 63v

Caps replaced on SMPS Main power supply

CS2, CS3, CS43: 1000 uf 35v
CS7, CS8, CS32: 1000 uf 16v


Total repair cost: $12.61 (from Digi-Key, including shipping).

Schematics (requires registration to view)
SMPS 1 Watt Board - http://www.badcaps.net/forum/attachment.php?attachmentid=39753&d=1336172937
L32WD12 schematics - http://www.badcaps.net/forum/attachment.php?attachmentid=84926&d=1398264681
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