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U.S.RADIO-TELEVISION CHASSIS 1001X SCH

AUDIO - SERVICE MANUAL
Type: (PDF)
Size
182.3 KB
Page
2
Category
AUDIO
SERVICE MANUAL
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  • Also known:
    CHASSIS 1001X 1001 U.S.RADIO TELEVISION
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  • See related repair forum topics below. May be help you to repair.
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Relevant AUDIO forum topics:
AEG SRP 4243 hordozható magnó nem kapcsol be.
Üdv tanyalakók! Elöször is boldog új évet minden tanyalakónak! Vásáróltam a cimben szereplö magnót azzal a hibával hogy szólt egy darabig utána örökre elhallgatott. Szétszedtem , a tápegysége jó mivel 12V ról üzemel és külsö tápos. Az alaplapon találtam egy kicsit füstös smd ict de nem találok róla semmit. Foto mellékelve. Minden segitökész hozzászólást elfogadok, és megköszönök! Üdv: atis76
Klipsch ProMedia 2.1 Amplified speakers


Original problem is no sub woofer output. Been through this one and recapped it and the common 2 burned 1K (R16/17)
resistors are replaced but the sub is still not responding. Volume control potentiometer is a common issue on these but
the L-R spkrs sound good.

Went by this webpage on the repair:
https://christopherbradshaw.net/The_Project_Bin/klipsch%20promedia%20subwoofer%20repair%20-%20page%201.html

On the schematic there is a sub-relay (sw101) powered by +V_HF line it
maybe is suppose to be +V_LF ? Without the relay coming on looks like the sub is disconnected.
The zeners (D03/04) that give +/- Vcc to the op amps seemed way off so I replaced them and the voltages seem much closer.

Theres also a sub-mute line on p104 to p101. Power supply shows the LF mute relay and interconnect diagram says it
gets fed from the LF amp. What is triggering the mute? I dont see a mute button anyplace.

Blaupunkt előlap mindig kivilágítva?
Sziasztok! Hozzám került egy Blaupunkt Bristol CD35 típusú autórádió. A kérdésem ezzel kapcsolatban ahhoz szól elsősorban, aki ismeri ezt a szerkezetet. Kikapcsolás után is folyamatos megvilágítás alatt tartja a kijelzőt és a gombokat. Ennek így kell lennie, vagy valami elváltozása van odabent? Ha ezt így találták ki, akkor szigorúan gyújtás kapcsolóval sorba kötve kell használni mert idő előtt feléli az aksi tartalmát. Még nem találkoztam ilyennel, azt hiszem. Aki ismeri, kérem írja le nekem, hogy helyesen működik-e, vagy álljak neki nyomozni. Előre is köszönöm! Üdvözlet.
Sony XR-1800 tuner gyenge
Üdv Végfokot cseréltem benne most kiderült a tunerja fm-en nagyon gyenge. Lenne valakinek bontott hozzá? Balázs
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