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Guest Message by DevFuse

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211k switching power supply problem


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5 replies to this topic

#1 OFFLINE   geminidpr

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Posted 17 September 2012 - 09:05 PM

I'm getting 168 volts at 2sk3520 but no voltage after the x-former. I replaced a bloated 1000mf at 10volts in the secondary and thought the unit would fire up but it didn't. Any help would be appreciated. Thanx.

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#2 OFFLINE   geminidpr

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Posted 18 September 2012 - 10:01 PM

A schematic diagram of the power supply will help. Thanx.

#3 OFFLINE   boba

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Posted 18 September 2012 - 11:55 PM

Should have swapped the receiver through DISH before you tore into it. Now you could try searching on ebay for a nonworking "for parts only" leased receiver that is being sold cheaply. Use that as a source of parts until you find the actual bad parts that you need.

#4 ONLINE   P Smith

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Posted 19 September 2012 - 09:34 AM

Or just get a grasp a concept of switching supply and you'll be 'independent' of particular implementation.

#5 OFFLINE   geminidpr

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Posted 22 September 2012 - 07:58 PM

I replaced the 2sk3520 and it fired up. Thanx 4 ur help guys.

#6 ONLINE   P Smith

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Posted 22 September 2012 - 08:46 PM

MOSFET. What was its position of silk screen ?




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