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ARCHIVED FORUM -- April 2007 to March 2012 READ ONLY FORUM
This is the first Archived Forum which was active between 17th April 2007 and
1st March February 2012
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I think, this mod was done wrong, the additional remote ir sensor does not meet the specs of a BM7000... some diodes are probably missing. It's not so easy to transplant 5500 technology into a 7000. Check the signal for CMOS/TTL signal compatibility. Probably the signal level is higher than 5V oder below 0V, then the integrated safety diodes in
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Hi Ronny, Ups, from Germany to Guatemala, half around the world... would be pretty expensive.
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What was done before that? Any repairs, modifications... ?Was the BM part of a link system? Was it moved?
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Erstmal was zur Hardware: P5-1 ist die Stromversorgung mit 11,5V P5-2 Nicht benutzt P5-3 und P5-4 sind die Geschwindigkeitssteuerung P5-5 ist Masse, geschützt über einen 4,7 Ohm Sicherungswiderstand Bei den Motoren für die Tapedecks ist unter dem Deckel eine kleine Tacho Regeleinheit. Dort ist in aller Regel auch ein kleiner Elko Kondensator
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Hi, Welcome to the Workbench! Your Beomaster has a problem with the "no load current" trimmer, its a 100 potiometer. Replace them, there are 2 of them. Read this... http://forum.beoworld.org/forums/p/26832/208076.aspx#208076 http://forum.beoworld.org/forums/p/4553/34390.aspx#34390 If your amplifier is unreparable burnt, i still have some spare
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Yes, i have seen this before with the missing 2200uf cap. The cd drives are different, one power supply voltage line is not used any more. So the cap is not necessary any more. I dont remember which voltage is gone, but i have had both types of the BC9300 in repair. The older drive had the cap, the newer drive did not. Was it the negative -9V line.
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Sorry, i never had this LX2802 in repair. I would check the bigger caps and the primary 150uf/400V cap. And the first oszillator cap with 6,8nf next to the first power transistor. If the small cap has gone bad, the frequency is to high and the transformer cannot transmit the faster magnetic field.
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You dont need 2000V for this cap, it's spec is just 1600V~ Use the smaller spacing.
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