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Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems. |
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#1
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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. |
#2
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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. |
#3
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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 |
#4
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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 |
#5
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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 |
#6
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Got it from al7bar. Not perfect but helpful. Thanks to Pogi.
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