JMD102 Replacing the master volume pot

JMD1 Head and Combo

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Speedofpunch
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JMD102 Replacing the master volume pot

Postby Speedofpunch » 11 Jan 2018, 07:13

I noticed at band practice last night that the volume of the amp was cutting out. If i touched the master volum knob it would cut out and in depending on if I moved it much. I'm thinking that at some point in transit something may have hit the knob. Is there a specific pot that I should use to replace it? Has anyone else had to go through and replace a pot in the JMD? I have a show coming up so I'll end up renting another amp so that I don't fear the thing crapping out on me during hte show but was hoping I might get some guidance from some of you fine folks as the roadhouse. Thanks!

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Re: JMD102 Replacing the master volume pot

Postby Anitoli » 11 Jan 2018, 07:21

More than likely it is a certain type of pot. Would need to see a pic of the internals to determine what type of pot to use as i am almost sure those would be attached to the pc board.

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Re: JMD102 Replacing the master volume pot

Postby SteveD » 11 Jan 2018, 10:41

9mm Alpha vertical mount
Still my guitar gently weeps

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Re: JMD102 Replacing the master volume pot

Postby Speedofpunch » 11 Jan 2018, 11:05

Anitoli and Steve, thank you so much for your quick reply! I really appreciate it. Would something like this work? https://www.ebay.com/itm/2-x-9mm-Alpha- ... XQUmFSoTpw

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Re: JMD102 Replacing the master volume pot

Postby SteveD » 12 Jan 2018, 01:15

The value is B10k.

Make sure you get the correct shaft type.
Still my guitar gently weeps

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Re: JMD102 Replacing the master volume pot

Postby Speedofpunch » 12 Jan 2018, 11:46

Thanks again Steve, I dropped the amp off with a local amp tech and am going to have him work on it. I really appreciate you responding but I'm a little nervous to solder on the amp....I love it and would hate to mess it up because I'm not 100% certain what I'm doing!

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