Hey everyone. Thanks for the help with my Marshall DSL 100 amp. Honestly, I'm disappointed in this amp. It's only 6 months old and has been used at most 1 hour a day. I'm not gonna pack this thing up and ship it off. I have all the test equipment and experience to fix it. A little bit about me. I'm a boilermaker at the present time, work 12 hours a day, 7 days a week, for months at a time. I'm away from home most of the time but I make a shit-load of money. Plan on retiring at 67(2 years from now) and devoting the rest of my days to becoming a musician. My passion is electric guitars and have built 5 from kits and they have turned out pretty good. Recently purchased a Yamaha MODX8 synthesizer. In my 20's and 30's I work on Motorola communications radios and the oldest of them were tube radios. If anyone knows what a 1st Class Radio Telephone license was I had one. Before the invention of the phased lock loop oscillator the only way to keep a radio on frequency was somebody had to turn a knob all the time. Anyway glad to meet you all and thanks for the help. If someone knows please leave a link for a schematic here if ya don't mind. Thank and enjoy your day.