grounding the cable used to connect v1 pins 2 and 7 seemed to do the trick. Sorry it took so long to reply. I am busy building more amps and we had a Guitar Show here in my area that we attended as a vendor.
thanks to everyone.
Search found 4 matches
- Thu May 21, 2015 12:47 pm
- Forum: Technical Discussion
- Topic: JTM45 internal jumper noise
- Replies: 8
- Views: 1642
- Fri May 01, 2015 4:28 pm
- Forum: Technical Discussion
- Topic: JTM45 internal jumper noise
- Replies: 8
- Views: 1642
Re: JTM45 internal jumper noise
Thanks I am going to give this a shot when I get home tonight. I will let you know how this works out.
- Fri May 01, 2015 1:40 pm
- Forum: Technical Discussion
- Topic: JTM45 internal jumper noise
- Replies: 8
- Views: 1642
Re: JTM45 internal jumper noise
The switch is right behind V1 on the backplate. The shielding is NOT grounded. It is a simple mod. I will try grounding the shielded cable.
Thanks
SWD
Thanks
SWD
- Thu Apr 30, 2015 10:29 pm
- Forum: Technical Discussion
- Topic: JTM45 internal jumper noise
- Replies: 8
- Views: 1642
JTM45 internal jumper noise
I have read a lot of posts about wiring V1 pin2 to V1 pin7 rather than using a patch cable from the low treble to the high normal inputs. I tried to add a spst switch for this but it made a lot of noise when it was off. Sounded fine on. I used short shielded cable. The noise was coming from the cabl...