Service manuals, schematics, eproms for electrical technicians
MONTGOMERY WARD 14WG-624A SCH
Type: 
(PDF)
(PDF)Size
98.2 KB
98.2 KB
Page
3
3
Category
AUDIO
SERVICE MANUAL
AUDIO
SERVICE MANUAL
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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 montgomery manual?
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MONTGOMERY WARD 14WG624A 14 WG 624 14WG 624A 14WG-624A
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Relevant AUDIO forum topics:
Sziasztok mesterek!
A fent említett láda elektronikájában eldurrant egy kodi, és hál'istennek magával rántott néhány környező alkatrészt is.
Ha van valakinek sm hozzá, vagy egy működő példánybol ki tudná vadászni az alkatrész értékeket szépen, s hangosan mondanék köszönetet.
Köszi:
Imre
Sziasztok !
Boldog tulajdonosa lettem egy Quad 77 integrált erősítőnek, a kérdésem a következő lenne a távirányítója nélkül hogyan lehet a bemenetek érzékenységét átállítani ? Esetleg Budapest közelében van valakinek távja amivel áttudnám állítani ?
Üdv:
Antal
Sziasztok!
Kiverte a 30 A biztit. A tápja volt zárlatos. Két darab ultra FET van benne és egy SG2525AP ami meghajtja őket. Az egyik FET zárlatos volt. Cseréltem mind a kettőt és az SG2525AP. Kerepelve indul, hallani, hogy rossz frekin megy. Néha elhallgat és akkor beáll a +-25V a kimeneten. SMD elkókat cseréltem de semmi változás.
Valakinek volt hasonló?
Az egyik SMD elkó kipisilt és átvezetett a panel, csere után lemostam és jó lett!
Kiverte a 30 A biztit. A tápja volt zárlatos. Két darab ultra FET van benne és egy SG2525AP ami meghajtja őket. Az egyik FET zárlatos volt. Cseréltem mind a kettőt és az SG2525AP. Kerepelve indul, hallani, hogy rossz frekin megy. Néha elhallgat és akkor beáll a +-25V a kimeneten. SMD elkókat cseréltem de semmi változás.
Valakinek volt hasonló?
Az egyik SMD elkó kipisilt és átvezetett a panel, csere után lemostam és jó lett!
I have and found most of the voltages as indicated on the circuit diagram, till op amp M 5218P; are near those specifed. The output on the centre of the two power transistors of both the channels are also alright.
While looking at the voltages on test points as mentioned on the page 7 for setting up quiscent current, these cannot be set.
Bit of history, the amplifier was lying unused for long time. Nothing in it has burnt. It was never opened earlier than this time, couple of days back.
While looking at the voltages on test points as mentioned on the page 7 for setting up quiscent current, these cannot be set.
Bit of history, the amplifier was lying unused for long time. Nothing in it has burnt. It was never opened earlier than this time, couple of days back.
While I was probing for voltages with DMM, with probe on collector of TR413 one of the fuses blew up. Later same thing happened on the other channel as well.
With the above as background can a Good Samaritan figure out feasibility of repair.
i am unable to upload service manual as file size is 7.3 mb
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