Service manuals, schematics, eproms for electrical technicians

MICROLAB M-200 290 300 600 SCH

AUDIO - SERVICE MANUAL
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AUDIO
SERVICE MANUAL
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    MICROLAB M-200 M200 290 300 600 200
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Relevant AUDIO forum topics:
JBL Boombox 2 nem kapcsol be
Sziasztok

JBL Boombox 2 nem kapcsol be. Töltő csatlakoztatásra sem reagál.

Szétszedtem, akkupakk kimeneten 8V van .  Li-ion polimer 72,6Wh (7,26 V / 10 000 mAh)  akku van benne. Terhelve tartja a  feszt.

Alaplapon nem látok semmi hibát.

Ha valakinek van ötlete légyszi segítsen.
Köszi
Üdv
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advice for repairing a DBX BX3 power amp (fused power transistor)
 
i have a very nice vintage DBX BX3 amp on which at least one channel fused.
power transistors literally burned down.

it is a very nice piece of hardware (4 channels with BTL capability 4x125W or 2x300W)
I would like to fix it myself. Having an electronic engineering degree, i think I should be able to undertake that venture but I never practiced (i've been in software for the last 40 years...)
So I need some guidance on the methodology to diagnose and track what went wrong.

I do have a scope, signal generator and I guess all required tools, as well as the schematics of the amp.
what I need is some help on locating the key parameters to measure and how to incrementally explore the different stages of the amp to find the faulty sections.

I guess I need to isolate the different sections of the amp but then, what ?

any help and advice will be highly appretiated.

 
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Sziasztok! Az említett Hi-fi torony CD, CDR lejátszás meg a tuner működése alatt is időnként kikapcsol készenlétibe. A kikapcsolás változó és független a hangerőtől, van amikor 5, 10, 20 perc után, de volt, hogy 1 órát is ment. A végfok hűtő bordáján nem észleltem túlmelegedést. A ventillátort szétkaptam, tisztítást és kenést kapott. Tápokban a nyagyobb értékű kondik kimérve, szükség szerint cserélve. Még mindig ott tartok ahol a part szakad... Üdv
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