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MONTGOMERY WARD 93WG-800A 800B 800C 809A 809B 809C SCH

AUDIO - SERVICE MANUAL
Type: (PDF)
Size
252.3 KB
Page
6
Category
AUDIO
SERVICE MANUAL
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    MONTGOMERY WARD 93WG800A 800B 800C 809A 809B 809C 93 WG 800 809 93WG 800A 93WG-800A
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Relevant AUDIO forum topics:
McIntosh MC2205 végfoktranzisztorok tipusa, helyettesítése-MEGOLDVA
Sziasztok! Hozzám került javításra egy McIntosh MC 2205 végfok. A hibabehatárolás megtörtént, jobb oldali végfokozatban 2db végtranzisztor zárlat,és az összes emitter ellenállás szakadt.... A gépben Motorola tranzisztorok vannak, 74-es gyártás. A tipus nem publikált, egy 2x3 jegyű part number (132-133 és 132-134) van a tranzisztoron, mai szóval "maszkolt". A kérdés a következő: -mivel helyettesíthető a két tranzisztor, illetve ha megvan a típus akkor érdemes mindkét oldalt átalakítani az "új" tipusra? A végfok 1975-ös gyártás, túl sok félvezető nem jöhet szóba, de szeretném korrekt módon javítani, a tulaj csak profi munkát fogad el. Sajnos a google nem volt a barátom, tehát a típus azonosításban kérnék segítséget. Üdv! Luki Ui:A szóban forgó TO-3 Alutokos tranzisztorokból rengeteg féle van nálam elfekvőben, a 2Nxxxx, MJ sorozatból, még a régi 70-es, 80-as évekből, tehát lenne mivel javítani, még akkor is ha mind a 12 db cserélve lenne, mindkét oldalon... Ha nem lesz más megoldás, akkor legvégső esetben megvallatom a jó példányokat Curve Tracer-rel.
Grundig T 30 tuner teljes müködésképtelenség
Szevasztok. A megnevezett tunerem kifogástalanul müködött. Ujbóli bekapcsolás után teljes " sötétség " rajta. Kijelzők sem működnek.Hogy el tudjak indulni nagy segitség lenne egy rajz, de csak a Grundig T 35- ét tudtam elérni, az pedig nem stim. Ha tudtok kérem segitsetek rajtam. Köszönettel: Kitimi51
Kenwood KDC-W5534UY nincs kép a kijelzőn MEGOLDVA!
Üdvözlet mindenkinek! A címben említett autórádiónak a kijelzőjén nem látni semmit,a készülék hibátlanul működik az előlapon világítanak a led-ek de kijelzőn nincs semmi.Tud valaki segíteni?Előre is köszönöm Üdv:Mitu
Yamaha CDX-590 laser adjustments?
I have a Yamaha CDX-590 CD player and it skips on some CDs - original CDs, these CDs play without problems on my other CD players. I have changed the laser unit (KSS-210A) but this didn't solve the problem. When I turn the player upside down, it plays the problematic CDs without a problem. That's why I think the laser needs adjustment. I have only a service manual for the CDX-493/593 but they should be very similar to the CDX-590. It seems that the adjustments are done via "test mode" of the CDX-590, unfortunately there is not much information, how to exactly, in the service manual. Here is a picture of the PCB. http://www.volny.cz/hwtest/PCB.JPG Here are the "test mode" sections of the service manual. http://www.volny.cz/hwtest/TM1.GIF http://www.volny.cz/hwtest/TM2.GIF In "test mode" I have tried Auto adjustment mode 1, 2, 3, but I don't know if it should work fully automatic without any intervention or when the mode is fineshed and I can proceed to the next one. So I activated mode 1, waited a while, activated mode 2, waited a while, activated mode 3, then exited test mode. It didn't help. Mode 1 - only a short blink of two horizontal dashes on the display and thats it Mode 2 - started "play" without sound from a strange time 99:00 (the test CD is not so long), after a while it skips to another time, "plays" a while, then skips back and "plays" and so on, I left it about an hour and it was still going on Mode 3 - seems to be very short as mode 1 I think I'm missing something ... Maybe someone did this or even serviced Yamahas in an official service and can provide information how to adjust the laser? Or maybe the problem is not the laser?
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