@gitar335
Forum Replies Created
-
Posts
-
Barry, I soldered the pots directly and it improved tremendously. I will sit down this week with an audio probe and report findings.
problem solved… used my audio probe and found several marginal solder joints. reflowed and works as it should.
Thanks for the quick reply Barry, I will check them.. also, if you noticed the 10004 diode, I burnt one of the solder pads and relocated what I think is the correct alternative (it works ) do you see any problem?
Hi everyone, I have been trying to determine where the problem is with the audio probe and have not found the problem. I have replaced resistors and metal film capacitors and nothing fixed yet. Interesting find was I removed Q2 and there was no affect to the sound. If I pulled oany of the remaining three I loose sound all together. I am hoping this helps to troubleshoot.
On a side note, is there anyone on the forum who does repairs?
Thanks again
Tom
I changed R28 to 10R and the IC voltages are as follows
IC1 Pin 8 – 6.8vdc, Pin 7 – .7vdc, Pin 1- .5vdc
IC2 Pin 8 – 8.8vdc, Pin 7 – .7vdc, Pin 1 – .5vdc
IC3 Pin 8 – 6.8vdc, Pin 7 – 4.5vdc, Pin 1 – 0vdc
IC4 Pin 8 – 6.8vdc, Pin 7 – 5.3vdc, Pin 1 – 0vdc
The four LED’s on the board glow when I turn the volume up all the way (no strumming). I can hear the other pots affect change in tone when rotated however nothing but a faint spitting sound when strumming the guitar.I still get bypass sound.
There may be nothing to do but just start over with a new board. Working on this one more will result in more issues, however I want to learn from my mistakes so I don’t keep making the same ones on projects going forward.
As always, thank you for the great product and support.
Tom
