Members groovy13 Posted January 27, 2013 Members Share Posted January 27, 2013 I have a Marshall DSL 100 watt head circa 98' original owner. OVer the past few yearsI have had bad luck with tubes/sockets etc. I have found out that the output board(part #201 I think)was made too thin until around 2003/2004 which causes the board after a period of time tojust shoot voltage every which way. SOme have said this is more common with a TSL. I have even had tube melt---yes melt onto the board. I have ordered a new board and was wondering how difficult this is to install.(i can do minor sodering). And, If I still need to have the amped rebiased even with matched tube sets? Thank you Link to comment Share on other sites More sharing options...
Members HiRoller Posted January 28, 2013 Members Share Posted January 28, 2013 Try contacting Marshall or a factory authorized service center. I know there was an issue with some TSL circuit boards that caused the bias to skyrocket and melt tubes. Not sure about DSL's. I was a tech at a repair shop a while back and remember replacing PCB's under warranty. Link to comment Share on other sites More sharing options...
Members HKSblade2 Posted January 28, 2013 Members Share Posted January 28, 2013 Clean the unit out with compressed air. Take pics with good lighting and check the exposures before you even think about taking it apart. You want a very good visual reference. Link to comment Share on other sites More sharing options...
Members groovy13 Posted January 29, 2013 Author Members Share Posted January 29, 2013 Yes i have heard from a another tech that it happened in the TSL models. but y DSL is doing the same problem - the bias floats around becasue of the thin board then overheats and blows out tubes...I have had 3 tech repair it with new sockets and capacitors --this is my last resort Link to comment Share on other sites More sharing options...
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