Re: Pioneer PDP-502MX Power problem

So maybe you can answer this?

Q203 it's near Q201 (first main transistor) - whats written on it. Is it BS or FR?
D234 it's on RCC (little board near Q201) - it's A or A5 or what?

That would be really helpfull. On my board q203 just gon by blowing up so I dont know what was the real one.. I putted an NPN there (BS) so.. That could be a problem of not turning on maybe?

Re: Pioneer PDP-502MX Power problem

The problem is that everything what is working is STB power no Vsus; ADR +10; +14 etc.. There is just +12 STB and +5 STB

Re: Pioneer PDP-502MX Power problem

Already done that. Ceramic resistors are fine, changed one already. FET is schanged. Few days ago power supply was almost working properly.. I mean I didn't pluged the connector of Vsus and etc. it Showed an error with LED, but now it wont start at all.. The second relay RLY131 doesnt work for some reason I don't know..

Re: Pioneer PDP-502MX Power problem

Hi, see an old theme of this TV.
Have the same model and etc. I have all most powered on the TV but one mistake burned out more parts. So now I have a problem. Realay turns on and then turns off and repeats it all over again. It doesne't matter what is going on on the board. I removed all RCC's and all OTL's it's still doing that. Everything what is working is STB power lines. It wont start other parts of power supply. Any LED showing an error, but it's only becouse of all power supply doesn't start. In schematic there is no many parts...