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Post by roughneck on Jun 17, 2016 21:03:08 GMT
I put my amps on and no sound at all nothing zilch,they power up but no sound  any ideas anyone please? The amps are Magnum Mp150 and Mf150. TIA |
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Post by MartinT on Jun 17, 2016 21:06:24 GMT
How do you know they power up? Indicator or similar? The first thing I'd look for are internal blown fuses.
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Post by roughneck on Jun 17, 2016 21:13:41 GMT
Yes the lights come on,good idea i shall check fuses
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Deleted
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Post by Deleted on Jun 18, 2016 1:41:48 GMT
There is fuses or there was on the old design on the PCB mounted on the heatsink. Now what FET's has it got the H-PAK type from Hitachi often went short with peaks on the PSU i.e. mains. Have you lost both channels ? then the faults could be in the pre with the muting relay, the original had a SECA output stage and again pcb mounted fuses. If you need help I would be happy to help. Best Colin
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Post by roughneck on Jun 18, 2016 7:49:01 GMT
Hi Colin,i shall look for fuses,As for FET's i havent got a clue what to look for sorry :/ Yes both channels gone down.
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Post by Deleted on Jun 18, 2016 10:14:30 GMT
H-Pak FETS have two fixing holes, normal packaged FET's are normally in the Magnum and Inca Tech TO3P or TO247 have one fixing hole.
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Post by roughneck on Jun 18, 2016 11:56:22 GMT
Thank you for your help but im going to be passing the amplifiers on to a very good friend of mine who is willing to take them on. I will buying myself some new amps. Thank you again
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Post by Deleted on Jun 18, 2016 13:36:23 GMT
I do hope Dan enjoys them and keep them longer than he normally does. He does seem to have a fast in fast out plus profit approach.
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Post by roughneck on Jun 18, 2016 16:08:33 GMT
He will enjoy them Colin and he has finally come to that point in life where he has stopped buying hifi.
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any ideas anyone please? The amps are Magnum Mp150 and Mf150. TIA
