Posts by Jeppe (archived2)
97 total posts74 results
Restoring a Beomaster 1000
in Imported Content (Unmapped) · May 21, 2017 16:24I have managed to make one of my BM1000's sing again! I have both a black and a white version which I am working on at the same time, although lately my posts was about the troublesome black version. Work on this black o…
Restoring a Beomaster 1000
in Imported Content (Unmapped) · Apr 28, 2017 23:36Martin 👍 Oh ***.. The transistors are AC151 and AC153. Can this be the problem.. The specs seem relatively similar but then perhaps not replaceable with AC128's.. AC151 and AC153 will be ordered on ebay. Will report the…
Restoring a Beomaster 1000
in Imported Content (Unmapped) · Apr 28, 2017 13:47It says on the label on the back: Nr 1000 - Type 2314 Serie 01 P3 No 22124 I do not have a manual for this precise version. I use a manual for 2302-2304. I am a bit unsure about measuring the points J and K actually. I t…
Restoring a Beomaster 1000
in Imported Content (Unmapped) · Apr 27, 2017 23:31Thanks Dillen, I am honored to get your advice. One problem is that the schematics are a mess, I have only one silicon BM1000 schematics version, it is not always corresponding to my machines. In this schematics I see no…
Restoring a Beomaster 1000
in Imported Content (Unmapped) · Apr 18, 2017 12:43Hi Jean, It has been a very interesting restoration project, I wish you best of luck. Maybe we can share our problems in this thread? I am continuing with mine. Actually I have two BM1000 that I want to restore, but so f…
Restoring a Beomaster 1000
in Imported Content (Unmapped) · Mar 26, 2017 16:55Not sure if anyone has patience or interest to follow my struggle with the Beomaster 1000.. This may develop into the most annoying thread here.. But I have myself learnt alot from similar threads to this one, so I am su…
Restoring a Beomaster 1000
in Imported Content (Unmapped) · Mar 24, 2017 21:15Today I tried some new steps on the black Beomaster 1000 with germanium transistors. I replaced the diode bridge. I checked another transistor (AC128 in schematics but AC152 in reality) in the smoking channel, but it was…
Beomaster 1000 health check
in Imported Content (Unmapped) · Mar 24, 2017 21:05Beomaster 1000 with germanium transistor has problems.
Restoring a Beomaster 1000
in Imported Content (Unmapped) · Mar 19, 2017 17:56Next step today.. Removing the double heatsink with the AC128's. They tested ok. Using the Peak Atlas tester that Mika recommended. Got one! I was careful to avoid overheating the AC128's, as I have learnt that they don'…
Testing AC128's on Beomaster 1000
in Imported Content (Unmapped) · Mar 19, 2017 17:40Testing germanium transistors, AC128's, mounted in a heatsink in the Beomaster 1000, using a Peak Atlas tester.
Soldering using Goot heat clamps
in Imported Content (Unmapped) · Mar 19, 2017 17:36Soldering on a Beomaster 1000, AC128's and a zener diode, using the excellent Goot heat clamps.
Transistor testing on BM1000
in Imported Content (Unmapped) · Mar 19, 2017 17:34Transistor testing on a Beomaster 1000, using a Peak Atlas transistor tester.
Restoring a Beomaster 1000
in Imported Content (Unmapped) · Mar 16, 2017 20:03I see, very clever. Thanks! One may suspect the regulator circuit. It is the problem both my BM1000's under repair have, probably, making them sound "wowowo.." in both channels. On this one the AD149 IV is fine, so I sus…
Restoring a Beomaster 1000
in Imported Content (Unmapped) · Mar 16, 2017 18:12Martin, thanks for a super quick answer! I did suspect that the resistor itself was not the problem, so it will not be so easy as to replace it I figured. And that made me distressed, where should I look next..😕 I figur…
Restoring a Beomaster 1000
in Imported Content (Unmapped) · Mar 16, 2017 17:18My quest for a functioning Beomaster 1000 goes on. I never seem to give up, in spite of constant setbacks and about as much knowledge in electronics as a horse.. Today I took on the challenge of checking my black germani…
Beomaster 1000 smoking resistor
in Imported Content (Unmapped) · Mar 16, 2017 17:07The incense of vintage electronics, given off by this resistor.
Restoring a Beomaster 1000
in Imported Content (Unmapped) · Mar 11, 2017 12:04The restoration is moving ahead slowly.. I haven't given up yet. Is there anyone here with knowledge and time enough, who feels compelled to delve into these difficult topics below: ❓ 1) How do you adjust voltage? 2) Has…
Restoring a Beomaster 1000
in Imported Content (Unmapped) · Mar 2, 2017 11:28Thanks Mika. I ordered the Peak Instrument. No oscilloscope yet, perhaps later. Although I am still a novice I have learnt tremendeously since my first post. Thanks for all your help so far!
Restoring a Beomaster 1000
in Imported Content (Unmapped) · Mar 1, 2017 09:44Oh dear, they must be desoldered to be checked? Addition: I got an idea from youtube, it may be enough to desolder them to test them, you may not actually have to remove them from the board if you can desolder cleanly. T…
Restoring a Beomaster 1000
in Imported Content (Unmapped) · Mar 1, 2017 08:40Thanks Mika! It might be a good idea to get me a transistor tester, for example the Peak DCA55 mentioned in the link you sent. It seems it tests germanium as well. And they can be tested in-circuit? I am determined to ge…