Pioneer PDP-433MXE Power Supply fault

[Ian French]

I am attempting to repair the Power Supply Unit ( board number PCB2310
A06-12196B MDK79V-0) fitted to a Pioneer plasma panel PDP-433MXE (similar to
a PDP-503MXE).
I have found most of the faulty components, caused by the failure of Q127,
and its source resistor, but I don't know what caused Q127 to fail in the
first place. I have traced out part of the circuit (schematic) and have
tested all of the likely items.

I am unable to find a service manual on the web which contains a circuit
diagram, but I have found some references to this fault on a Russian
website, only problem is I don't read Russian ! Even so this has been
usefull in identifying some of the failed components.

Does anyone out there have a circuit / schematic for the power supply which
I can have, or does anyone know what causes this fault?

Any help would be most appreciated.

Thanks.

Ian.

 

On Wednesday, August 15, 2007 4:31:54 PM UTC+1, Ian French wrote:

I am attempting to repair the Power Supply Unit ( board number PCB2310
A06-12196B MDK79V-0) fitted to a Pioneer plasma panel PDP-433MXE (similar to
a PDP-503MXE).
I have found most of the faulty components, caused by the failure of Q127,
and its source resistor, but I don't know what caused Q127 to fail in the
first place. I have traced out part of the circuit (schematic) and have
tested all of the likely items.

I am unable to find a service manual on the web which contains a circuit
diagram, but I have found some references to this fault on a Russian
website, only problem is I don't read Russian ! Even so this has been
usefull in identifying some of the failed components.

Does anyone out there have a circuit / schematic for the power supply which
I can have, or does anyone know what causes this fault?

Any help would be most appreciated.

Thanks.

Ian.

Did you find all the fixes to bring this plasma back to life?

My PDP-433MXE just went pop when I tried to bring it out of standby

 

[Allodoxaphobia]

On Tue, 10 Jun 2014 05:15:31 -0700 (PDT), uvacity@googlemail.com wrote:

On Wednesday, August 15, 2007 4:31:54 PM UTC+1, Ian French wrote:
I am attempting to repair the Power Supply Unit ( board number PCB2310
A06-12196B MDK79V-0) fitted to a Pioneer plasma panel PDP-433MXE (similar to
a PDP-503MXE).
I have found most of the faulty components, caused by the failure of Q127,
and its source resistor, but I don't know what caused Q127 to fail in the
first place. I have traced out part of the circuit (schematic) and have
tested all of the likely items.

I am unable to find a service manual on the web which contains a circuit
diagram, but I have found some references to this fault on a Russian
website, only problem is I don't read Russian ! Even so this has been
usefull in identifying some of the failed components.

Does anyone out there have a circuit / schematic for the power supply which
I can have, or does anyone know what causes this fault?

Any help would be most appreciated.

Thanks.

Ian.

Did you find all the fixes to bring this plasma back to life?

Please.
Would you googlegroopers please take note of the _date_ of the
postings you are (futily) following up to.