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-   -   schematic for power supply of pansat 2500a (https://www.diybanter.com/electronics-repair/115480-schematic-power-supply-pansat-2500a.html)

Thirsty August 3rd 05 12:31 AM

schematic for power supply of pansat 2500a
 
anybody know where I can get a schematic for the power PCB for
a pansat 2500a? EMP from a nearby lightning strike caused a
problem. receiver won't power up, I am checking the SMPS PCB,
no visible damage, have 165 VDC to the mosfet drain but the heat
sink gets too hot, and mosfet apparently is not working because
there is no secondary DC voltage going to the main board. T1
coils test good in circuit. warranty does not cover lightning
strikes. pulled C5 and tests OK. haven't pulled any other
components. have checked a lot of caps and diodes in circuit
and nothing stands out.


IM4AQT August 9th 05 09:02 PM

Send it back to Pansat. Thay will put a naw board in for $50.00
"Thirsty" wrote in message
ups.com...
anybody know where I can get a schematic for the power PCB for
a pansat 2500a? EMP from a nearby lightning strike caused a
problem. receiver won't power up, I am checking the SMPS PCB,
no visible damage, have 165 VDC to the mosfet drain but the heat
sink gets too hot, and mosfet apparently is not working because
there is no secondary DC voltage going to the main board. T1
coils test good in circuit. warranty does not cover lightning
strikes. pulled C5 and tests OK. haven't pulled any other
components. have checked a lot of caps and diodes in circuit
and nothing stands out.




Thirsty August 10th 05 09:29 PM

I prefer to repair myself, am still looking for schematic.

IM4AQT wrote:
Send it back to Pansat. Thay will put a naw board in for $50.00



Valdivar August 12th 05 04:21 AM

Same here.I'm looking for the schematic for the 2100a
"Thirsty" wrote in message
ups.com...
I prefer to repair myself, am still looking for schematic.

IM4AQT wrote:
Send it back to Pansat. Thay will put a naw board in for $50.00





kilmister August 12th 05 06:08 AM

shouldn't need a schematic to fix a pwr supply board. probe around until
you find a shorted diode or transistor and replace it. there is not much
else in them.


"Valdivar" wrote in message
...
Same here.I'm looking for the schematic for the 2100a
"Thirsty" wrote in message
ups.com...
I prefer to repair myself, am still looking for schematic.

IM4AQT wrote:
Send it back to Pansat. Thay will put a naw board in for $50.00







jchen September 26th 05 07:51 PM

1 Attachment(s)
Got it from al7bar. Not perfect but helpful. Thanks to Pogi.


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