4D/70 Repairs
LH Research "MightyMITE" power supply
According to the SMPS Repair FAQ, I'd better check for dried up capacitors in the output modules:
Sounds that SMPSs make 2. High pitched, but audible, whine - Excessive load. Like (1), this may be caused by shorted components. For example, a common failure a Panasonic VCR power supply is for the 18 V zener diode across the 15 V output to short due to dried up electrolytic capacitors. The result in an overload and whine, but usually not a catastrophic failure of anything else.The big filter capacitors in the 5V module are rated 28000µF / 7.5VDC / 85°C. A suitable replacement would be Cornell Dubilier Electronics type CGS183U010R2C.
The main rectifier filter capacitors are rated 2900µF / 200VDC / 85°C. The Cornell Dubilier Electronics CGH292T250V3L would be a good replacement for those.
They aren't cheap: replacing the lot would cost close to 200EUR ...
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Date: 2010:06:24 22:45:19
Date: 2010:09:30 20:33:03
Date: 2010:09:30 20:34:05
Date: 2010:09:30 21:42:05
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Date: 2010:09:30 21:48:51
Date: 2010:09:30 21:53:22
Date: 2011:01:08 12:22:28
Date: 2011:01:08 12:22:52
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Date: 2011:01:08 12:24:07
Date: 2011:01:08 12:25:00
Date: 2011:01:08 12:26:42
Date: 2010:07:13 22:22:38
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Date: 2011:01:09 14:47:36
Date: 2011:01:09 14:47:19
Date: 2011:01:11 22:54:01
Date: 2011:01:11 22:57:18
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Date: 2011:01:11 22:58:28
Date: 2011:01:11 23:02:14
Date: 2011:01:11 23:03:36
Date: 2011:01:11 23:06:12
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Date: 2011:01:11 23:07:11
Date: 2011:01:11 23:19:16
Date: 2011:01:11 23:20:29
Date: 2011:01:11 23:28:34