After a power surge resulting in tv not powering back on after surge.
Trying to work on the power supply. When its plugged in I have 4.2v on ps-on and 5.2 on stby. But I get no standby light on unit. Using power switch results in nothing happening. No clicks or buzzing from PS. This is with cable to X-main disconnected and main board still plugged in. No led lit on logic board either.
Removed PS for testing, jumpered ps-on with ground and get correct voltages on main board connector. Which is 15v and 5.3v. But no clicks like my other plasma smps does when turned on.
On X-main connector 15v and 5.3v are correct but get no VA or VS volts at all. No spike to 0 when jumper first inserted to ps-on. I replaced all caps except for the 2 large 450v, 1 250v and a 100v 470uf. None showed any visual bulging or damage.
My camera is not that great so pics are not up to par. Model # on ps is BN44-00512a or PSPF391501a.
Nothing on either side of board is burnt or exploded, some discoloration around the 2 green disc resistors close to AC in. Anyone have any idea what to look at next?? Thanks. Todd
Trying to work on the power supply. When its plugged in I have 4.2v on ps-on and 5.2 on stby. But I get no standby light on unit. Using power switch results in nothing happening. No clicks or buzzing from PS. This is with cable to X-main disconnected and main board still plugged in. No led lit on logic board either.
Removed PS for testing, jumpered ps-on with ground and get correct voltages on main board connector. Which is 15v and 5.3v. But no clicks like my other plasma smps does when turned on.
On X-main connector 15v and 5.3v are correct but get no VA or VS volts at all. No spike to 0 when jumper first inserted to ps-on. I replaced all caps except for the 2 large 450v, 1 250v and a 100v 470uf. None showed any visual bulging or damage.
My camera is not that great so pics are not up to par. Model # on ps is BN44-00512a or PSPF391501a.
Nothing on either side of board is burnt or exploded, some discoloration around the 2 green disc resistors close to AC in. Anyone have any idea what to look at next?? Thanks. Todd
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