Blowing HT fuse in JTM 45

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Astralblues
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Blowing HT fuse in JTM 45

Post by Astralblues » Thu Jun 04, 2015 12:11 pm

Hey all,

I'm having a problem with blowing the Internal fuse of my kit. The amp powers on for about 10 seconds, gives a whisper of a signal then cuts out. The amps light stays on however.
Also, I'm getting weird voltages on the preamp sockets. V1 and V3 have slightly higher voltages than normal but the V2 socket has almost nothing. Any idea what could be causing this?

danman
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Re: Blowing HT fuse in JTM 45

Post by danman » Thu Jun 04, 2015 5:15 pm

Did you wire the board jumper wires on top of the board or underneath of it? It sounds as if you may have a problem with the board wiring but we will need good clear pics to help diagnose.

ivan H
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Re: Blowing HT fuse in JTM 45

Post by ivan H » Thu Jun 04, 2015 8:32 pm

Hi, also check to make sure that u haven't gotten a wire accidentally caught between the underside of the board & one of the board standoffs when u fitted the board. Hope u get it sorted. Cheers

vh junkie
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Re: Blowing HT fuse in JTM 45

Post by vh junkie » Thu Jun 04, 2015 9:05 pm

1) Don't put the power tubes in until you post a full voltage chart including the power tube readings
2) Be detailed about which PT you are using
3) Post pics
"With all due respect, sir, you're beginning to bore the hell out of me."
- Gunny Highway

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