My MP 1 has the upgraded power supply and is blowing the main power fuse, 2.5a, about 5 seconds after the power switch is turned on, about the time you normally see the offset LEDs illuminate. Checked all tubes, found 1 bad one of the regulator tubes , but not the problem. Any suggestions prior to sending in for repair, maybe the filament diode bridge?
Mark
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Topic - MP1blowing main fuse - MVA 12:12:58 05/26/14 (9)
- RE: MP1blowing main fuse - Ralph 08:52:16 06/03/14 (0)
- RE: MP1blowing main fuse - Michael Samra 19:06:35 06/01/14 (0)
- upgraded power supply? - Ralph 12:27:44 05/29/14 (2)
- RE: upgraded power supply? - MVA 16:34:59 05/29/14 (1)
- OK. So the preamp is at least 10 years old. - Ralph 08:59:57 05/30/14 (0)
- "main power fuse" - Lew 10:26:29 05/28/14 (2)
- RE: "main power fuse" - MVA 16:00:18 05/28/14 (1)
- RE: "main power fuse" - Lew 07:37:48 05/29/14 (0)
- RE: MP1blowing main fuse - plugmein 03:18:37 05/28/14 (0)