FIX: Sparkle Power FSP270-50SNV power supply

KenLayton

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The Sparkle Power (FSP Group, Inc. ) Model FSP270-50SNV power supply is used in some Raw Thrills "Buck Hunter Pro" computers. This is a 270 watt power supply with noise killer.

Symptoms:

Noise/fine ripples in the picture. Sometimes power supply won't startup. Sometimes power supply makes computer keep rebooting.

Cause:

Open it up and inside there's a small (about 2" by 2" ) circuit board standing up from the main board. This little board will have the markings "JR CH24B" on it and it's soldered to the main board via an 11 pin header. On this board are several _tiny_ electrolytic capacitors that have gone open and need to be replaced. Replace these:

C1: 1 uf @ 50 volts

C5: 2.2 uf @ 50 volts

C7: 22 uf @ 35 volts

C8: 1 uf @ 50 volts

C10: 2.2 uf @ 50 volts

On the main board are these two electrolytics that have gone bad:

220 uf @ 16 volts

4.7 uf @ 50 volts

Unfortunately I forgot to write down the locations for those two caps.

Surprisingly none of the other caps (including the large filter caps) were bad.

This fixed this power supply and it's back on location again.
 
for the time it takes to repair this supply, you can buy a new one and be farther ahead. We buy these for less than $30 and your time is worth more than the time it takes to do the repair.
 
for the time it takes to repair this supply, you can buy a new one and be farther ahead. We buy these for less than $30 and your time is worth more than the time it takes to do the repair.

..and I could have put a switcher in my Stargate, but I fixed the p/s and that was rewarding.
 
for the time it takes to repair this supply, you can buy a new one and be farther ahead. We buy these for less than $30 and your time is worth more than the time it takes to do the repair.

And he can spend an hour replacing caps and have it back on location before the new supply can be shipped in. ;)
 
And he can spend an hour replacing caps and have it back on location before the new supply can be shipped in. ;)

And lately it seems the company I work for has been taking a month to ship me replacement power supplies/parts. So fixing the bad one did indeed get the machine back in operation.

I just happen to stock all the parts I needed to repair that particular power supply.
 
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