JCM900 problems

Discussion in 'Marshall Amps' started by josep_cla, Jul 18, 2019.

  1. josep_cla

    josep_cla Member

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    I mean, sorry, it blows fuses now, with the new tubes.
    Not sure if they were blown before. Now it blows fuses.

    Yes, a trip to the tech would be mandatory.

    Thanks everyone.
     
    Mitchell Pearrow likes this.
  2. john hammond

    john hammond Well-Known Member

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    confucius say " get ready to pay through the ass".
     
  3. josep_cla

    josep_cla Member

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    Nah, I'd rather throw it away than pay top dollar for a 900 repair haha
     
  4. Gunner64

    Gunner64 Well-Known Member Premium Member

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    Good luck. If it was free a few $ to get it running should be well worth it. Even if you just flip it
    If you got it for nothing a couple hundred to fix it is well worth the money.
     
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  5. John BNY

    John BNY Well-Known Member Premium Member

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    I have a 1998 JCM 900 4502. It's been rock solid, and produces some great tones. If you can get it sorted out, it's worth fixing.
     
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  6. EADGBE

    EADGBE Well-Known Member

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    Good luck and let us know what the problem was.
     
  7. ampmadscientist

    ampmadscientist Well-Known Member

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    Take out the power tubes, put a new fuse in, and turn it on again.
    Does the fuse still blow?
     
  8. josep_cla

    josep_cla Member

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    Yes, still blowing.
     
  9. BowerR64

    BowerR64 Well-Known Member

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    Dang it would be a shame to throw away a 900
     
  10. Gunner64

    Gunner64 Well-Known Member Premium Member

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    I'll pay shipping...send it to me.:)
     
  11. josep_cla

    josep_cla Member

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    Haha.
    No, not realy throwing it away.
    200? Why not.
    400? Not worth it. You can find working ones for that.
     
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  12. Gunner64

    Gunner64 Well-Known Member Premium Member

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    Not anywhere I have seen lately.
     
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  13. josep_cla

    josep_cla Member

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    Here is plenty (Spain).
     
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  14. Gutch220

    Gutch220 Well-Known Member

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    I'd have someone look at it and give you a price to fix it. Troubleshooting is the hard part.....fixing is easy. Then you can determine if it's worth it for you. You also want to avoid going down a rabbit-hole of problems.
    With something like this you really need to dig into it and know how to troubleshoot circuits and whatnot
     
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  15. cozmacozmy

    cozmacozmy Member

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    So what ever happened to this amp? Did you get it fixed?
     
  16. josep_cla

    josep_cla Member

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    Oh, yes!
    Swapping tubes and fuses we made it work.
     
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  17. cozmacozmy

    cozmacozmy Member

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