Help! my JVM410H is faulty.

[geramie89]

Hi, my name is Geramie. I bought a new JVM 410H 18 months ago from guitar center of jacksonville, florida and ever since roughly 15 months ago, i have had an intermittent problem with internal feedback that is so loud, i cannot hear myself play. I have had it looked at 4 times by a certified marshall repair center, and they cant figure it out. please help me. i have had this looked at by EVERYBODY.

[LivewireBlanco]

Moved to the other amps section from the workbench.

[slowpokerhino]

Is the JVM board still around? They'd probably be able to help you more than us, I know the designer of the JVMs used to frequent that board (like Steve D does here).

Good luck Geramie.

[SteveD]

Hi Geramie89,

Sorry to hear of your problems with your JVM but I'm sure if you visit http://jvmforum.com/phpBB3/ there will be lots of help for you to get it solved.

Cheers,

Steve

[Supernaught]

I had a weird intermittent "squealing" issue with my old Laney VH100R. I thought it was the tubes or something but it seemed to go when I wiggled the jack in the socket, so I took it apart and re-soldered the input jack in case it was a dry joint and never had the problem again.

Although having said that Marshall repair centres will know a LOT more than I, and Id be suprised if they overlooked something that simple.

Good luck with it.

[Tnjpekar]

sounds like a dodgy tube to me
what are your settings gain wise and what channel are you using?

[Rono]

I would like to make the effect loop on my 2266c footswicthable. That would take place of my reverb switch. And turn on or off the loop, I leave may reverb on all the time and have no need to turn on or off. Has anyone done this mod ??? Can this be done ??? Thanks

[SteveD]

Welcome to the forum Rono.

I believe someone on this forum has had this very same mod done by a tech.