Vintage Products

Re: Beomaster 2400 DOWN after 6 month

Søren Mexico — Sat, 28 Jan 2012 18:33:18 GMT

Got the fuse, and while cleaning GRAFITI of my white house front and painting, I left the 2400 playing, now 3 hours, nothing hot, no channel jumps.

Re: Beomaster 2400 DOWN after 6 month

Søren Mexico — Mon, 23 Jan 2012 19:27:20 GMT

Went checking, but the fuse blew, thats OK, I put a 1 A. in it, should be 2 A, but I didn't have any, tomorrow another day

Re: Beomaster 2400 DOWN after 6 month

Søren Mexico — Mon, 23 Jan 2012 19:22:20 GMT

Up and running with speakers now, 1 hour nothing gets hot no channal jumps, will leave her a couple of hours more

Re: Beomaster 2400 DOWN after 6 month

Søren Mexico — Sun, 22 Jan 2012 20:38:59 GMT

Eugene:

Søren Mexico:

Tested the remote I got from Leslie, funny the left side buttons all work, the right side not, will open and investigate, surely some oxidation.

I had one with some non funtioning keys and another thaat would only work when it wanted to. So i cleaned and recapped both and did some sold resoldering in the battery compartment. both work flawlessly now.

Thank you Richard, will do the same, but next week plenty of work, and I want to be absolutely sure the 2400 is working properly before assambling, 3rd time open

Re: Beomaster 2400 DOWN after 6 month

Step1 — Sun, 22 Jan 2012 19:22:06 GMT

Glad to hear it :)

Re: Beomaster 2400 DOWN after 6 month

Eugene — Sun, 22 Jan 2012 18:05:45 GMT

Søren Mexico:

Tested the remote I got from Leslie, funny the left side buttons all work, the right side not, will open and investigate, surely some oxidation.

I had one with some non funtioning keys and another thaat would only work when it wanted to. So i cleaned and recapped both and did some sold resoldering in the battery compartment. both work flawlessly now.

Re: Beomaster 2400 DOWN after 6 month

Søren Mexico — Sun, 22 Jan 2012 16:08:17 GMT

Tested the remote I got from Leslie, funny the left side buttons all work, the right side not, will open and investigate, surely some oxidation.

Re: Beomaster 2400 DOWN after 6 month

Søren Mexico — Sun, 22 Jan 2012 15:56:27 GMT

My BM 2400 is now working, on the test bench, nothing connected, FM 1 volume down, addjustment 15 V and no signal current, it has been on for about 1 hour and no channal jumps, will leave it for 1 more and then connect speakers.

The TR27 was shorted to chassis, and may have been half bad before that.

Thank you Gunther, Olly, Jacques, Martin and everybody else who helped, if we ever meet you are in for FREE BEER

Re: Beomaster 2400 DOWN after 6 month

hemenex — Tue, 17 Jan 2012 03:30:11 GMT

Søren Mexico:

Question: Do I add the missing C47a, or just leave it like it was

In the newest doc I have - the modification sheet - C47a is gone so shouldn't be neccessary. But I don't think it will hurt if you add it.

As all my opened BM's are 1900's (even the one in the BM2400-housing) I can't have a look at C47a now.

Check your TR27 before switching the BM on - it might not have liked to have been short-cutted

Re: Beomaster 2400 DOWN after 6 month

Søren Mexico — Mon, 16 Jan 2012 22:33:15 GMT

Question: Do I add the missing C47a, or just leave it like it was

Re: Beomaster 2400 DOWN after 6 month

Søren Mexico — Mon, 16 Jan 2012 22:15:19 GMT

Step1:
Actually Soren you can prove this by measuring the resistance between the positive of one of those capacitors and the collector or the transistor!

TR27 C to pos. on both caps 0.0 R and tracking the PCB tracks, there is nothing in between them, exept for a wire bridge TR27C to C47a

Re: Beomaster 2400 DOWN after 6 month

Søren Mexico — Mon, 16 Jan 2012 21:44:49 GMT

hemenex:
What about the insulation of TR27: Collector is also the "tab" with the screw:

back after a long day, deep into a frigging varnishing m/c, had varnish all over me, I hate that, when I retire I will do no bigger than the BM/BL 5000.

Yes, the new TR27 I put in, had a smaller hole for the screw, so when I tightened the screw, I just mashed the insulating ring and the screw got contact to chassis, hole difference is 0.3 Mm. the new 3.7 Mm. old 4.0 Mm, screw is 3.5, I found some heat shrink tube, put it on the threads, and with the mashed ring clean there is now no short, will return all desoldered tomorrow if the work allows it.

Re: Beomaster 2400 DOWN after 6 month

hemenex — Mon, 16 Jan 2012 16:40:15 GMT

I'm sure Lee already has them so no need for mugging

Gunther

Re: Beomaster 2400 DOWN after 6 month

Step1 — Mon, 16 Jan 2012 16:33:14 GMT

Ah should have guessed! You shouldn't admit to having nice clean copies of the diagrams you might get mugged lol!

Re: Beomaster 2400 DOWN after 6 month

hemenex — Mon, 16 Jan 2012 16:11:57 GMT

Step1:
there is a resistor between the 15v stndby line (the bit that Soren has measured) and the capacitors you mentioned, just to the right upper part of the touch detectors diagram 1

Olly,

There must be even more different circuit diagrams around than I have.

Just a moment, I have 3 of those diagrams - didn't see the 3rd one.

There's a version 1/77 that definitely has the resistor R66a / 82R you refer to. Of course this was the diagram I left in the envelope

I looked at version 12/77 A that definitely doesn't have R66a.

And the modification notice 3538401 (danish/english, no datecode found) doesn't have this either.

So all of us were correct. Now we'll only have to find Soren's short circuit Let's wait for his return....

Sometimes it's good to keep "double" diagrams - they might be a slightly different version

And the fourth one I have is the -2 modification...