Guess what?

Clockworkmike said:
Hope that clears it up man. It sucks that problem existed as wide as it did and Marshall knowing it, never once offered to correct it as a warranty
Click to expand...
Me too.
I put a new PCB.
Bias drift.
I added Dr. Tube mod.
Bias drift.
Failed to identify pots themselves as a potential source of trouble.

Now I have crispy R6 on main PCB, and ruined tubes.

20210408_132032.jpg


So today I received the replacement pots and a new matched quad of glass.
Getting stuff ready to go.
 
mcblink said:
Me too.
I put a new PCB.
Bias drift.
I added Dr. Tube mod.
Bias drift.
Failed to identify pots themselves as a potential source of trouble.

Now I have crispy R6 on main PCB, and ruined tunes.

View attachment 63577


So today I received the replacement pots and a new matched quad of glass.
Getting stuff ready to go.
Click to expand...
Getcha some good isopropyl alcohol and see if you can clear up your burns some. I got an SLX that had some charring going on from a bad Bridge Rectifier, but was able to clean it and thankfully it didnt burn any traces out.

Hope this works dude!
 
Cadorman said:
Sorry to see that mcblink. Glad I moved my TSL down the road before I had to go through that. The new DSL100HR does everything that my TSL100 did, but better.
Click to expand...
I also have a DSL100H

But it's not the same beast as my TSL was.

A beast, nonetheless...

As @Amp Mad Scientist has preached...

The TSL is the retarded brother of the DSL.....

There is still potential methinks
 
mcblink said:
Me too.
I put a new PCB.
Bias drift.
I added Dr. Tube mod.
Bias drift.
Failed to identify pots themselves as a potential source of trouble.

Now I have crispy R6 on main PCB, and ruined tubes.

View attachment 63577


So today I received the replacement pots and a new matched quad of glass.
Getting stuff ready to go.
Click to expand...
Don't put the tubes in until it passes all the tests.
Or the tubes could be destroyed.
You need to clean all the carbon off the circuit board.
Test all the bias voltages put in the tubes last.

I warned you.

If you want to run through all the tests we can do that.
But do not put the tubes in until it passes all the tests first.
 
marshalltsl said:
It's better replace bias board from the top.
Click to expand...
I had trouble sourcing the board itself as it is now discontinued so I just got the pots instead and will replace the faulty ones. Also the test pins are going to need resoldered. The bias board is already out, but this resistor also needs replacing on the main PCB, which is now free from the chassis and wiring


20210413_142713.jpg
 
Amp Mad Scientist said:
Don't put the tubes in until it passes all the tests.
Or the tubes could be destroyed.
You need to clean all the carbon off the circuit board.
Test all the bias voltages put in the tubes last.

I warned you.

If you want to run through all the tests we can do that.
But do not put the tubes in until it passes all the tests first.
Click to expand...
Not to worry, I have seen many disobey this very warning and I will not be putting my new bottles in this one until it passes all the tests.

I have ruined new tubes before lol
I learned my lesson lol
 
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