toshiba pdp50x3 power supply issue

[joe904]

Re: toshiba pdp50x3 power supply issue

I have noticed if I disconnect the av from the psu voltage stays constant and does not click off. I also just disconnected scaler board only still voltage drop in va and vs resulting in clicking off then trys to restart. can av board cause this?

[tom66]

Re: toshiba pdp50x3 power supply issue

Not typically, but it's plausible that the software/EEPROM on it got corrupted by all the power cycles leaving it in an inbetween / inconsistent state.

[joe904]

Re: toshiba pdp50x3 power supply issue

any suggestions i'm at a loss is their any thing I can check before replacement.

[tom66]

Re: toshiba pdp50x3 power supply issue

You can check things like the voltage regulators, and the AC DET signal from PSU. Try with Z-sus and Y-sus unplugged too. Other than that, I'm really not sure.

[joe904]

Re: toshiba pdp50x3 power supply issue

last thing .. I unplugged scaler from av remained on my its scaler board I have no clue thanks for all the help

[joe904]

Re: toshiba pdp50x3 power supply issue

I guess i'll try to figure this out again ; the set when plugged in trys to power on. front panel light is green . logic board d15 lites up d18 lites up d1 lites up d2 lites up then clicks and shuts down . then 10 seconds starts the cycle again. i have found that if I disconnect the plug from psu to the av board it does not shut down . if I only unplug from logic to scaler board .still clicks off. can an av board cause this problem???

[joe904]

Re: toshiba pdp50x3 power supply issue

I have figured it out . it was the scaler board it was shutting down power supply. thanks for the help . its up and working great.