This is my second TV repair attempt after repairing a Phillips with a similar issue.
I picked this TV up for $20 to attempt to repair it and put it in the kids room. The previous owner said recently it would stay on for up to a couple hours until more recently it would only turn on with no picture. I tried pushing the menu button with the TV on and shining a flashlight on it and am not seeing any signs of a picture which would normally indicate the backlight inverter out like the last TV I repaired.
I found a thread with another Polaroid tv with the same power supply as mine and have been trying to find the failed capacitors or diodes without any luck. https://www.badcaps.net/forum/showthread.php?t=27692
I pulled the diode at Z9 and it shows a rating of around 650 in one direction and 1 in the other with the diode check on my multimeter which I believe means it's ok from what I've read. I also checked the 3 x 1000uf caps near the corner of the board that are normally notorious for going bad as they are cheap. I pulled and inspected them and they are Rubycon (which I understand are very good). I have 3 new ones I picked up from Radio Shack but am hesitant to install them since these look and should be fine.
I'm not really sure where to go next.
I picked this TV up for $20 to attempt to repair it and put it in the kids room. The previous owner said recently it would stay on for up to a couple hours until more recently it would only turn on with no picture. I tried pushing the menu button with the TV on and shining a flashlight on it and am not seeing any signs of a picture which would normally indicate the backlight inverter out like the last TV I repaired.
I found a thread with another Polaroid tv with the same power supply as mine and have been trying to find the failed capacitors or diodes without any luck. https://www.badcaps.net/forum/showthread.php?t=27692
I pulled the diode at Z9 and it shows a rating of around 650 in one direction and 1 in the other with the diode check on my multimeter which I believe means it's ok from what I've read. I also checked the 3 x 1000uf caps near the corner of the board that are normally notorious for going bad as they are cheap. I pulled and inspected them and they are Rubycon (which I understand are very good). I have 3 new ones I picked up from Radio Shack but am hesitant to install them since these look and should be fine.
I'm not really sure where to go next.
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