Good ! Perfectly safe to remove those caps then. Sorry that I raised doubt. Stupid guys to add them in the first place, what were they thinking ? Martin

Bernie, you have an answer to your message, check your inbox at the top right corner. - And welcome to Beoworld ! Martin

This is probably the lift/lower problem that we've had so many times. There are several threads about this issue with decks of the same family, like Beogram 2400 / 2402 etc. Do a search here and you will find that it's usually a question of one drop of sewing machine oil in a dry spot. Martin

Hi Kat, Welcome to Beoworld ! First thing would be to lift off the platter and check that the belt is still on. Martin

Anybody with parts from a scrapped Beogram 4000 ? I need one IC type FCH131 or a complete board/module. Martin

You should contact B&O, they will be able to help you with the code for your system. Bring proof of purchase and it will be no problem. And in danish; B&O i f.eks. Esbjerg (Gl. Vardevej 237) vil helt sikkert kunne hjælpe dig med koden til dit B&O system. Husk at medbringe købskvittering etc. så er det en smal sag. Som

Check also the reset circuit on the processor board. Another thing is cracked solders, especially at the connectors at the lower edge of the processor board and the whole module 14 board (at the bottom of the Beomaster just below the processor board), check for cracked solders at the plugs/connectors, there are always a lot of them and they can cause

Good job on the power supply ! Happy to see that my first guess was right. Replace all electrolytic caps in the output stages, note some of them are bipolar. Check amplifier idle current and DC offset settings. Replace all four trimmers and readjust to factory specs. Do one channel at a time, starting with the (most) defective channel to prevent the

The 5 ohms measured as DC resistance would be about right, the rest is far out. Have you measured in-circuit or out ? Also note that speaker impedance (AC resistance) is different from the DC resistance your multimeter will give you (and greatly frequency dependent). Martin

"I understand what your saying about feed back but I can't see how it can feed back through a broken circuit" - It's not broken - that's part of the problem. I admit, it may not be the easiest circuit to look into but the caps introduce a high-frequency path from base to collector of their respective feedback transistors, providing