Question about Sanyo AVM-3257 32" TV
Chances are this is a power supply issue, I had a slightly larger Samsung set in here a couple weeks ago that acted the same way, would power up for 3 or 4 seconds then get less each time I tried to power it up to where it wouldn't come on at all and it was the 12 volt power supply giving issues, I changed the FET and driver transistor and it fixed the set, but unless you have a fair amount of electronic experience and some good test gear its going to be easier to just change the board, they aren't that expensive
Posted on Nov 27, 2017
Possible fault on the power board or panel as the TV seems to shut off on a protection.
Need to investigate on these boards for any physical failure preliminary
before starting on a circuit check.
Posted on Oct 24, 2017
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Posted on Jan 02, 2017
Solution to the won't turn on or turns on and turns off in 3 seconds thing...as my Ds24425 did.
First thing is very important...unplug the TV and let it set for 24 hours before you proceed.
The voltages inside a TV are EXTREMELY HIGH and LETHAL....so proceed with caution!
Place the set face down on a towel on a table and remove the back cover....hex screws around the perimeter and 1 phillips screw near the inputs.
The main board will slide up and out. unplug the degausing coil "white plug with two wires" and the speakers connector. This will make it easier to turn the board and take a look.
What I found with mine was a bad electrolytic capacitor. You can identify I bad cap "capacitor" by examining the tops of each one for bulging or signs of overheating "melted or bubbled plastic covering." The cap in question was C626 with a value of 1000uf, 16volt. I replaced with a 1000uf, 35volt and it works perfectly. The cap is located about center of the board. Carefully unsolder the cap and remove, make sure to install the new cap with the proper polarity...the board is marked with a dot indicating the negative lead of the cap.
Be sure to reattach the white plug and speakers connector and slide the board back into the plastic grooves. Then replace the back cover and test. Good luck! ...Daddio
Posted on May 24, 2009
look for d482 to be shorted if it is ecg 552 will replace and r482 will be open too iused a one ohm 1 wat res to replace so far it working just fine
Posted on Dec 04, 2009
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