I think you are refering to Dolby Surround Sound Rich Pro Logic was actually quite a bit more complex as there was a little bit of 'encoding / decoding' of extra surround information in the stereo source (+/- 90 signal so that it was canceled out under stereo conditions) but also based on various levels the signal was routed more effectively

Those Rodenstien caps are about 75% faulty usually. The orange capacitors tend to be well behaved and generally good I find. That Faulty bipolar will more likely be the reason the amp kept going into standby, as it is a major part of the protection circuit. Have you actually got an operational decimal point on the display?

Doing well so far :) Regarding Module 16, did you check all the joints as it is rather prone to drys especially round the sockets and the transistors! BTW Very nice choice regarding the ESR meter :) I gave up on my home brew meter a while back and as I live down the road from Peak, went to pick one of these up from their 'factory'! Really nice

I would not put that down to fault capacitors more likely dry joints / semiconductor. I think you should refrain from heating the processor can up as well!

This model is one of my all time favorites! I have restored a few now, and enjoy doing so every time :) They all suffer from similar faults / weaknesses but one thing worth noting is don't go in all gung-ho those LED displays are very delicate (can be repaired with SMT leds but fidly) other things to watch for are connectors coming loose when jiggling

[quote user="Søren Mexico"] [quote user="sonavor"] Here is the wiring diagram for my dim bulb tester that incorporates a variac, a VAC volt meter and an AC ammeter. The socket is where the unit being tested plugs into. [/quote] Thank you John, archived for future use, and thanks for the book titles [/quote] Make sure you replace

Worth noting the fuse is in the wrong place on that diagram, or at least the wire feeding the socket is, should be placed the other side of the fuse!

Not sure of that myself but as these units are known to be plagued with drys then it is definately a good place to start! I am sure Martin will be able to tell you immeadiately where the problem lies. PM him as he is not able to post atm.. Let us know how you get on.

if it is humming when on I would check the no-load current just in case it has drifted!

Wow three side by side? I assume they are just a visual thing or are any of them connected? [quote user="Søren Hammer"] I have a B&O collecting friend who has a Beomaster 6000 quad hung on the wall, side by side. He had made a wooden bracket to fix screws and easier mounting on the wall itself. [/quote]