Toshiba SD-P2000 Portable DVD Player w/ dim display

[Max Moor]

Hi All,
I've got a portable DVD player (Toshiba SD-P2000) with almost no
picture at all. If I shine an LED flashlight at it at just the right
angle, I can make out the picture, so video info is getting to the panel,
at least. My assumption is that I have a bad HV supply, or some such
thing. Can anyone give me any pointers as to how I might troubleshoot and
fix this? Schematics? Test points? Known issues with these? I know my
way around a scope and soldering iron, but I'm not sure where to start.

Thanks for any advice,

Max

 

[Jerry G.]

The backlight, and or the inverter must be changed. Usually they will change
both units together when you send the unit in for service. I would suggest
to not try to service this unit yourself.

--

Jerry G.
=====


Hi All,
I've got a portable DVD player (Toshiba SD-P2000) with almost no
picture at all. If I shine an LED flashlight at it at just the right
angle, I can make out the picture, so video info is getting to the panel,
at least. My assumption is that I have a bad HV supply, or some such
thing. Can anyone give me any pointers as to how I might troubleshoot and
fix this? Schematics? Test points? Known issues with these? I know my
way around a scope and soldering iron, but I'm not sure where to start.

Thanks for any advice,

Max

 

[Max Moor]

The backlight, and or the inverter must be changed. Usually they will
change both units together when you send the unit in for service. I
would suggest to not try to service this unit yourself.

Hi Jerry,
I suppose I should have set folks minds to rest, and said that I've
been in electronics for over 20 years, with a fair deal of HV experience.
I'm just new to the LCD stuff. (I wouldn't want a novice poking around in
there either.

I've done a bit more looking, and even though I haven't pulled my
scope and HV probe out of mothballs yet, I gather that I should see a
square wave of some hunderds of volts out of the inverter.

Assuming that I don't, and I can convince myself that it should run
on 12V in, even though the PCB has 24V printed near the trace, I have found
a source for a new inverter.

I'm wondering if you could tell me the reason behind replacing the
inverter and the tube together? Again, I don't have any experience with
these. Do they tend to die together? Is there a simple test one can use
to test the CCFL?

Thanks for the help,

Max