Service manuals, schematics, eproms for electrical technicians
PHILCO BELFAST AM-FM RADIO RECEIVER SCH
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101.1 KB
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AUDIO
SERVICE MANUAL
AUDIO
SERVICE MANUAL
If you get stuck in repairing a defective appliance download this repair information for help. See below.
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Good luck to the repair!
Please do not offer the downloaded file for sell only use it for personal usage!
Looking for similar philco manual?
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- Also known:
PHILCO AMFM RADIO RECEIVER AM FM AM-FM
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Relevant AUDIO forum topics:
Sziasztok. Schneider rádiós erősítőbe keresek SI1020H-ict. Eddig sehol nem találtam, egyszerűen nem lehet kapni. Kérdésem az lenne hogy hogyan lehetne ezt helyettesíteni?
Sziasztok!
Van javításon egy házi gyartmanyu végerôsítô ±38V táppal, a kimeneten oszciloszkóppal nézve csak a hangjel alja (negatív része) jön ki.
Egy hasonló rajzot találtam a neten, de nálam a Q7 bázisán -37V van.
1.Nálam NPN a végfok akkor is -0.69V kell hogy legyen?
Nagyon torz a hangzása, de ha megtekertem teljes hangerôre akkor megjelent a hang felso pozitiv része is, csak hát most így elszállt a Q4 meghajtô tranzisztor a pozitiv résznél, meg a Q8 nyugalmi áramot beállitó tranzsztor.Q8-at kicseréltem és kiszedtem a meghajtókat 1.39V/-1.39V helyett 8V/-8V-ot mérek, elôtte pedig 1.39V/-1.39V volt. Most nem merem berakni a meghatókat nehogy kilôjje.
2.Lehetséges hogy mivel nincsenek benne a tranzisztorok azért van 8V?
"Hasonlo.jpg" rajz csak a végtranzisztorból nem 2x2 db van benne
Working on one of these, they say it was at Pioneer service center and
they claim its got a bad HDMI board. They wanted more than the product retailed for
to fix.
I cannot get it to power up, does not seem to be any standby power....they claim one day it just did not power up.
Cannot locate a SM.
they claim its got a bad HDMI board. They wanted more than the product retailed for
to fix.
I cannot get it to power up, does not seem to be any standby power....they claim one day it just did not power up.
Cannot locate a SM.
onkyo txsv373 hoz keresek leirásokat szerviz infót kapcsolási rajzot,,köszönet érte.üdv
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