Service manuals, schematics, eproms for electrical technicians
HEATHKIT BR-1 SCH
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130.2 KB
130.2 KB
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Category
AUDIO
SERVICE MANUAL
AUDIO
SERVICE MANUAL
If you get stuck in repairing a defective appliance download this repair information for help. See below.
Good luck to the repair!
Please do not offer the downloaded file for sell only use it for personal usage!
Looking for similar heathkit manual?
Good luck to the repair!
Please do not offer the downloaded file for sell only use it for personal usage!
Looking for similar heathkit manual?
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- Also known:
HEATHKIT BR-1 BR1 BR
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Have a nice Day! - See related repair forum topics below. May be help you to repair.
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Relevant AUDIO forum topics:
AKAI AM-2400-hoz kellene kapcsolási rajz,esetleg szervízkönyv.Kaptam egy ilyen múzeális szép darabot,végfok tranzisztorok hiányoztak belőle.Beletettem helyette BD249-250 komplementer párt,működik,de valamiért melegszik benne egy feltehetőleg stabilizátor tranyó.Ennek szeretnék utánanézni,de amit innen letöltöttem rajzot sajnos elég elmosódott,nem igen láthatók az alkatrész értékek.Kérlek benneteket ha valaki tud segítsen.Előre is köszönöm.Rezisztor
Friends Sony STR DH130 goes into protection mode soon after turning on. It works for a second then can hear loud pops from speakers.
I've tried the suggested methods to fix but nothing works. Correct impedance speakers. Speakers wired correct. Good ventilation.
I've tested the output transistors in circuit and I don't see anything unusual. I may pull them to test but will wait for advice here. I also measure
about 57 volts on the emitter resistors. Seems high to me. Anyone?
I've tried the suggested methods to fix but nothing works. Correct impedance speakers. Speakers wired correct. Good ventilation.
I've tested the output transistors in circuit and I don't see anything unusual. I may pull them to test but will wait for advice here. I also measure
about 57 volts on the emitter resistors. Seems high to me. Anyone?
Hi Guys.
I have an Ashdown MAG300 EVO ii bass amp on my workbench. It was stacked together with other music gear in a small storage room - not the best idea. I got it to work now but it does not sound as it should. Cranked up all the way, it does not get to 300W. And I had it once before so I have an idea about how it should sound.
I got the service manual for the ASHDOWN ELECTRIC BLUE MAG which is similar but not the same.
Any idea where to find the correct schematics?
I have an Ashdown MAG300 EVO ii bass amp on my workbench. It was stacked together with other music gear in a small storage room - not the best idea. I got it to work now but it does not sound as it should. Cranked up all the way, it does not get to 300W. And I had it once before so I have an idea about how it should sound.
I got the service manual for the ASHDOWN ELECTRIC BLUE MAG which is similar but not the same.
Any idea where to find the correct schematics?
Hi!
Ez egy nagyon profi cucc, nálam van a hozzá való erősítő is. Egymás nélkül nem használható, lévén ez a kütyü vezérli a végfokot is. Az egységen csak a készenléti LED világít, semmire nem reagál, nem ad vezérlést az erősítőnek. A tulaj szerint alaphelyzetben az időt mutatja. Nos ez ezt sem. Ahogy lenni szokott, az előlapi panelon szvsz elszállt a proci, 5V ok, -30V ok és az egyéb tápok is. A STBY gomb jelét ez fogadja és dolgozná fel. De néma csend, a proci az egyetlen aktív elem, néhány ellenállás, kondi és csók. Még quarc sincs. Valakinek egy elfekvő darab, vagy rajz mert olvashatatlan a tipus...:/ ?
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