LF: DELL 32" LCD Television schematic model W3201C

[mikercana1]

Does anyone have a schematic diagram for a 32" DELL LCD television
model W3201C.
Problem is with the power supply or else the mainboard not working
properly.

I found qty 2 transistors FET shorted, a screw caused a short and the
fuse was blowing.
I changed the transistors but the only that comes on on the main board
is the SY5VDC LED the other 5 VDC and 12VDC LED do not come on.

I suspect either the power supply to be still faulty or else the
mainboard do not send the proper turn on voltage.

When I plug it in, I hear the power supply oscillate, I see the SY5VDC
LED lit on the mainboard , once I turn on the unit using the ON/OFF
switch, I get that LED to come on but nothing else.


If I had a diagram I could trace those voltages to the power and out of
the power supply.


Appreciate any help

 

[Franc Zabkar]

Does anyone have a schematic diagram for a 32" DELL LCD television
model W3201C.
Problem is with the power supply or else the mainboard not working
properly.

I found qty 2 transistors FET shorted, a screw caused a short and the
fuse was blowing.
I changed the transistors but the only that comes on on the main board
is the SY5VDC LED the other 5 VDC and 12VDC LED do not come on.

I suspect either the power supply to be still faulty or else the
mainboard do not send the proper turn on voltage.

When I plug it in, I hear the power supply oscillate, I see the SY5VDC
LED lit on the mainboard , once I turn on the unit using the ON/OFF
switch, I get that LED to come on but nothing else.


If I had a diagram I could trace those voltages to the power and out of
the power supply.


Appreciate any help

In the absence of a diagram, I'd locate the PWM controller IC,
assuming there is one, and download its datasheet. Then look for an
on/off pin and work backwards from there.

You could also try finding out who actually built the TV by searching
the following database for the FCC ID:
https://gullfoss2.fcc.gov/prod/oet/cf/eas/reports/GenericSearch.cfm

- Franc Zabkar

 

[mikercana1]

The ICs are all surface mount, tiny and can't tell the part number on
them.

Thanks anyway, maybe I can find another unit evantually to compare with

Franc Zabkar a écrit :

 

[mikercana1]

Where does DELL support get their diagrams for these units?
mikercana1 a écrit :

 

[Michael A. Terrell]

Where does DELL support get their diagrams for these units?

What makes you think that Dell repairs them?


--
Service to my country? Been there, Done that, and I've got my DD214 to
prove it.
Member of DAV #85.

Michael A. Terrell
Central Florida

 

[James Sweet]

Where does DELL support get their diagrams for these units?

They don't, repair is done by board swapping until it works, defective
boards are scrapped.