Pioneer PDP-4270HD

[mcross]

I have a Pioneer PDP-4270HD, power light is on standby light is on, get no response when power button is pressed. Seem to have correct power from the ps. Any ideas as to where to look for the problem.
Mike

[mardocdor]

Re: Pioneer PDP-4270HD

Hi! Did you try turning it on using its remote control? If it wont work, try to measure the voltage on the PSU if it present and normal...

[mcross]

Re: Pioneer PDP-4270HD

PSU voltage is normal, I do not have the remote. checked the button switches, all good
Mike

[mcross]

Re: Pioneer PDP-4270HD

I have been looking at this again and both the standby and power on lights come on when the cord is pluged in. ///? strange?

[cliff_hootarski]

Re: Pioneer PDP-4270HD

Does this model incorporate a 'trap" switch? It looks as if it does on the right support column. If you power on the set without depressing the switch, the TV goes into a shutdown mode.

[mcross]

Re: Pioneer PDP-4270HD

I seen that and checked it but no help. I will keep looking
thanks
Mike

[tom66]

Re: Pioneer PDP-4270HD

If you trigger the trap switch you need to reset it. There are instructions in the service manual.

[mcross]

Re: Pioneer PDP-4270HD

Ok, that's new for me. Will look at that. Just thought it needed be depressed
Thanks Tom

[cliff_hootarski]

Re: Pioneer PDP-4270HD

If you would have read the pdf file I supplied in my previous post, you would have seen the symptoms of both the power and stby LED's is the trap switch protection feature has been triggered.

[mcross]

Re: Pioneer PDP-4270HD

Sorry Cliff, I looked at the pdf, but not the trap switch, first time seeing one of them
mike

[cliff_hootarski]

Re: Pioneer PDP-4270HD

I have a 50" model (5045HD) that would not turn on. I unplugged one or both sustain boards and tried to turn it on. That must have reset something because all I had to do then was to clear the trap switch problem and have been watching the TV ever since.