anyone eyeball anything that looks wrong?
Working the startup test...
4.7 volts before the recto tube.
only 33V on v1 pin 1 so i Stopped.
Thanks for any help! Much appreciated.
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Weird voltages..got some issues. Could use some eyes please?
Moderator: VelvetGeorge
- Big Mike
- Senior Member
- Posts: 796
- Joined: Tue Oct 31, 2006 12:42 am
- Just the numbers in order: 7
- Location: East Bay California - Raider Nation
Weird voltages..got some issues. Could use some eyes please?
Metroamp kit JMP50 - CM OT
Metroamp JTM45 turned JMP50 w/Classictone OT
Marshall 2550 Jubilee
Powered by Thorn and Kauer guitars
Scumback Speakers
Metroamp JTM45 turned JMP50 w/Classictone OT
Marshall 2550 Jubilee
Powered by Thorn and Kauer guitars
Scumback Speakers
- neikeel
- Senior Member
- Posts: 7231
- Joined: Tue Dec 06, 2005 8:31 am
- Location: Suffolk, England
Re: Weird voltages..got some issues. Could use some eyes ple
Sorry Mike need better pics with better light of the rectifier socket, PT wiring and switches.
What I can see even magged up looks ok......
What I can see even magged up looks ok......
Neil
- Big Mike
- Senior Member
- Posts: 796
- Joined: Tue Oct 31, 2006 12:42 am
- Just the numbers in order: 7
- Location: East Bay California - Raider Nation
Re: Weird voltages..got some issues. Could use some eyes ple
thanks I'll get some better ones.
weird stuff.
4.7 volts between 2&8 of recto
120V at the wall
610 Volts on standbye off...on it drops to 406
Nothing on pin 5 of V4 and V5 (Should be -45DC)
heaters are good.
when I went (farther than I should have) yesterday with preamp tubes in, ( no power) only got 33V on pin 1 of V1.
weird stuff.
4.7 volts between 2&8 of recto
120V at the wall
610 Volts on standbye off...on it drops to 406
Nothing on pin 5 of V4 and V5 (Should be -45DC)
heaters are good.
when I went (farther than I should have) yesterday with preamp tubes in, ( no power) only got 33V on pin 1 of V1.
Metroamp kit JMP50 - CM OT
Metroamp JTM45 turned JMP50 w/Classictone OT
Marshall 2550 Jubilee
Powered by Thorn and Kauer guitars
Scumback Speakers
Metroamp JTM45 turned JMP50 w/Classictone OT
Marshall 2550 Jubilee
Powered by Thorn and Kauer guitars
Scumback Speakers
- Big Mike
- Senior Member
- Posts: 796
- Joined: Tue Oct 31, 2006 12:42 am
- Just the numbers in order: 7
- Location: East Bay California - Raider Nation
Re: Weird voltages..got some issues. Could use some eyes ple
Recto tube readings for pins 4 and 6
standbye off. tube in.
Pin 6 347VDC
Pin 4 422 VDC
Standbye on
pin 6 36VDC
pin 4 50 VDC
standbye off. tube in.
Pin 6 347VDC
Pin 4 422 VDC
Standbye on
pin 6 36VDC
pin 4 50 VDC
Metroamp kit JMP50 - CM OT
Metroamp JTM45 turned JMP50 w/Classictone OT
Marshall 2550 Jubilee
Powered by Thorn and Kauer guitars
Scumback Speakers
Metroamp JTM45 turned JMP50 w/Classictone OT
Marshall 2550 Jubilee
Powered by Thorn and Kauer guitars
Scumback Speakers
- Big Mike
- Senior Member
- Posts: 796
- Joined: Tue Oct 31, 2006 12:42 am
- Just the numbers in order: 7
- Location: East Bay California - Raider Nation
Re: Weird voltages..got some issues. Could use some eyes ple
Foiled by a bad HT fuse.
Everything dropped right in line...though the recto was a bit under 5V.
Sounds great though.
Everything dropped right in line...though the recto was a bit under 5V.
Sounds great though.
Metroamp kit JMP50 - CM OT
Metroamp JTM45 turned JMP50 w/Classictone OT
Marshall 2550 Jubilee
Powered by Thorn and Kauer guitars
Scumback Speakers
Metroamp JTM45 turned JMP50 w/Classictone OT
Marshall 2550 Jubilee
Powered by Thorn and Kauer guitars
Scumback Speakers