Recent content by siod

Yes, I can remove and replace components and run tests with my good old multimeter, but I do not have access to an oscilloscope at this time...

Sorry, I am new here... I balanced the bias and visually inspected the power tubes and tested each and every pin for shorts... Still hums...

Hello. I just got a "new to me" TSL100H and when I switch on the power everything is fine. Once I flip ON the standby switch, I hear it hum even when all the dials are set to zero. When I plug in a guitar cable to the input, it hums a little louder. But not to the point where I can not hear the...

Hey, thanks for your feedback. What I have seen is that the TSL was problematic in regards to the bias, but that was in the 2003 models and earlier. Apparently, Marshall fixed this problem in 2004 and the later models, and since then the rating has been around 90mv.

Thanks for getting back to me. In case anyone else is wondering about the bias values for the DSL401 and the TSL100H, here is the response from Marshall. Hello, Thank you for your email regarding your question, the bias on the TSL 100 is 90mv and the DSL401 550mv, we recommend that is carried...

Hi, can anyone PLEASE tell me the correct bias values for the following Marshall amps? TSL100H (2008) DSL401 (2008) Thanking you in advance siod