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Temp "Time Format" issue Fix in Discussions

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Author Topic: MP1 Classic Clean Issue  (Read 312 times)

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AndiK

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MP1 Classic Clean Issue
« on: Time Format »

Hi all,

my MP1 Classic produces hiss/strange sounds in clean tube mode, when the "brown" uses both modes it is not that strong. Solid state and distortion mode are working normal. Battery and tubes are checked and ok...symtoms appear to be clearly limited to the clean mode only...
Any suggestions???

Thanks
Andi
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MarshallJMP

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Re: MP1 Classic Clean Issue
« Reply #1 on: Time Format »

Try to replace R151 and see if that works. There's some info about it on the depot, just do a search for it. You could also try to measure the resistance first, it should be 180k ohm. Sometimes these go up in value.
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AndiK

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Re: MP1 Classic Clean Issue
« Reply #2 on: Time Format »

Just measured R151 - reading 176k, so this should not be the reason for the issues. Has to be in the signal path of the clean tube mode....

Andi
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