MArkBass 250 black line fix??

[BaggyMan]

One the disadvantages of trawling around the web and such is seeing something useful before you actually need it. 

So in the hope that someone on here has such information

 

I have a Jeff berlin combo with the 250 black line head in it.  The first head has a problem with the digital switching power supply issue which was pant wettingly expensive to replace /repair,  so I bought a second hand 'hardly used' one to swap it out .

 

All seemed well when i started getting a distortion in the signal and output.  I seemed to vaguely remember a fix that re-routes a cable away from the power or something which solves it.....anyone??

[yorks5stringer]

Almost new head for sale in Amps for £180...... assume you've checked all the connections and leads and basses in the signal chain on yours  first?

[lemmywinks]

B-Stock on Thomann for £208:
https://www.thomann.de/gb/markbass_little_mark_250_blackb_stock.htm