Oh, looks like someone with very little soldering skill did something here. Can you provide a photo or two of the component side too ? Martin

The Master Control Panel holds no settings, it's all in the Beomaster. You can take out the MCP batteries, leave it for a while and reinsert to reset the processor inside the MCP but there's no guarantee that it will cure the fault. To me it sounds more like a matter of cleaning the buttons. It doesn't take much dust or a drop of something

First see if you can find out why it happened. Check the DIN sockets, the solder tags are often very close and a short here will kill the output stage. Next, check if other components are damaged too; Resistors, driver transistors, diodes, trimmer etc. Two different ways of mounting was used on Beocenter 1400 cooling fins and the transistors housings

Could be a capacitor problem, that can almost never be ruled out but it could also be a blown output stage or even the transformer itself. You can isolate the transformer by lifting off its secondary leads. You can also put an ohmmeter across the output stage transistors (unpowered) and compare one channel to the other. Martin

The current is the same as it is a series circuit, regardless of the direction and there are other components in the controlling circuit (before amplification !) that will possibly cause greater "disturbance" than non-matched hFe transistors. The two "sides" of the H-bridge are not controlled the same way anyways and there are trimmers

List updated Martin

Yes, I have correct transistors if you need. I see absolutely no need for hFe matching of any of these transistors - why would you ? Martin

Har du skiftet alle kondensatorerne i kit'et ? Martin

I seem to remember Die_Bogener did a couple of these. Do a search in the fora. Martin

No chance of shipping to Denmark, I suppose. Martin