Re: Panasonic TC-L26X1 - no power
Looking at the service manual, found Standby 5.7, 3.3 and 1.8V on the A-board and they all check out. Somewhere when poking around with my multimeter probe I triggered the power supply relays on and the LED on the front came on. All voltages were present on the A-board connector from the P-board. TV still doesn't do anything....
Guessing that the A-board will need to be replaced. These seem pretty scarce may be more trouble than it's worth.
Greg K.
Member
Last Activity: 09-14-2013, 07:16 PM
Joined: 08-07-2013
Location: Albany, NY
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Last edited by Greg K.; 08-09-2013, 12:46 PM. -
Re: Panasonic TC-L26X1 - no power
Cap C601 = 5.7V. Also found the STB5V pin on the connector to the A-board and it's also reading 5.7V. So what to check next?Leave a comment:
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Re: Panasonic TC-L26X1 - no power
Green circled IC is A6252. Pic attached.
Capacitor voltage from top to bottom:
0V
0.5V
10.9V
19.9V
17.0V...Leave a comment:
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Re: Panasonic TC-L26X1 - no power
Hmm, looks like there's 163V going into the transformer (41-603), nothing coming out.Last edited by Greg K.; 08-08-2013, 04:07 PM.Leave a comment:
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Re: Panasonic TC-L26X1 - no power
163V there, yes.Last edited by Greg K.; 08-08-2013, 03:34 PM.Leave a comment:
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Re: Panasonic TC-L26X1 - no power
So.. should there be any relay clicks when power is applied? I guess the two relays that are feeding the bridge rectifier are triggered when the tv is turned on. PCB has a spot for a third relay but they just have the thermistor there instead.
Guess I need to figure out where to check for the standby power and trace back from there. Found the service manual for the TV but it doesn't have much info on the p-board.Last edited by Greg K.; 08-08-2013, 10:39 AM.Leave a comment:
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Re: Panasonic TC-L26X1 - no power
Photo of back. (iPad I'm posting from will only let me attach one photo per post as I think it names them all the same)...Leave a comment:
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Re: Panasonic TC-L26X1 - no power
Two of em....Last edited by Greg K.; 08-08-2013, 08:38 AM.Leave a comment:
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Panasonic TC-L26X1 - no power
Hello.. I'm trying to diagnose a problem for a friend. Panasonic TC-L26X1, seems to be dead, no lights, relay clicks or anything when plugged in. Last resort is a new power supply board, but I figured I'd try to save her $50. Since there are no relay clicks, I'm guessing something in the standby section of the board is bad.
Fuse is good, caps all look good and I'm measuring 120V past the coils at the bottom, and at the thermistor in the lower left. No power from the bridge rectifier, but it seemed to test ok with the diode tester of my multimeter. Also checked the numerous other... -
Re: New Members - please post your introductions here
Hello everybody - I am here to diagnose a problem with a friend's TV, and save her a bit of money. And this seems like just the knowledgeable bunch to provide that help! My electronic component skills are a little on the rusty side...Leave a comment:
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