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. NOTE: See the later post with the updated diagram

I doubt it could be more stupid than miss-wiring a +15 VDC rail wire to a ground plane. One of the most important rules to follow in working with electric circuits is to triple-check everything before turning power on! If you get in a hurry it is easy to make a mistake. It is also easy to mess up when you haven't had enough sleep. One good basic

I paid around $70 (including shipping) for mine. That was a used one. It is single-phase, 120 VAC, 60 cycles, handles up to 12 amps of current, 1.4kVA. So it is for the US. It also has a fuse to protect it...which I have blown a couple of times. I checked the prices of currently advertised variacs on ebay and prices of ones that have sold on ebay as

Happy New Year Søren. I built the dim bulb tester a while ago. I will look up the wiring diagram I made or create a new one for you. I think I am infected with the BeoVirus. I was thinking about it as I was painfully trying to get the switches aligned on the other BM4000 unit. I came to the conclusion that while B&O equipment is often difficult

Thank Rich, I am happy to be a Beomaster 4000 member. I think B&O was ahead of their time on this design. It is sleak and modern looking even today yet the slide controls and pushbuttons give it a vintage look that I much prefer over a cold, flat touch screen. I'm not knocking the later B&O receivers that are also great looking but my personal

That is my "dim bulb tester" and no, that doesn't mean where I connect myself to when I do something dimwitted like wire something backwards. It is my variation of a dim bulb tester. I copied the setup from a picture I saw someone else had in their workshop. In case you don't know, the idea of the dim bulb tester is to place a light

I think I am about ready to declare my Beomaster 4000-2408A receiver completed. The only thing I haven't connected and checked is a Beocord phonograph. My setup isn't convenient for me to do that right now so it will have to wait. The Tape 1 and 2 inputs work well using an ipod device and the FM tuner is working quite well. It was my first Beomaster

I thought I would throw in a picture of my BM4000-2408-B unit where I have the tuner preset module removed. With the preset module removed my main FM tuning works pretty good. With the preset module installed I get all sorts of problems - interference between the tuning pots. I checked the preset tuning pots and they all seem to work fine. The little

Here is a picture of a recap difference between the Beomaster 4000 Types 2408-A and 2408-B. The difference in the picture is that the Type 2408-A IF Decoder PCB (8002058) has an electrolytic capacitor for reference designator 216. The 2408-B has a tantalum (I believe that is what it is). The capacitor value in both cases is the same, 22uF so this wasn't

I am getting close to wrapping up my two Beomaster 4000 refurbishment projects. I have the first one (type 2408-A) working now. The second one (type 2408-B) is working except for the tuner presets. About my type naming - I am calling Type 2408-A the first modification of the original Type 2406 per the service manual. I am calling Type 2408-B the second