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LOEWE-OPTA 537W AC RADIO SM

AUDIO - SERVICE MANUAL
Type: (PDF)
Size
125.5 KB
Page
2
Category
AUDIO
SERVICE MANUAL
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  • Also known:
    LOEWEOPTA AC RADIO 537W 537 LOEWE OPTA LOEWE-OPTA
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  • See related repair forum topics below. May be help you to repair.
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Relevant AUDIO forum topics:
Relay needed
I Have a Sony STR-V55 stereo receiver and need a relay for it. It is 24 volt and the Soney part number is 1-515-347-00. RY801 on the schematic. Can anyone give me an idea how to cross reference the Sony part number? I am not having much luck finding it on line. Thanks
LG hi-fi CD mechanika
Üdv. mindenkinek . Egy kis segítség kellene egy 3 cd.s mechanika be pozicionálásában (LG FFH-313A ) .
Turntable Victor/JVC TT-71
Given:

Victor TT-71, neon lamp does not light, speed is lower than normal.  This is subsequent some short circuit the owner does inside the device.  No further details.

I found out the VICTOR QL7 have the same motor driver amd I downloaded the service manual that I attached here in case this manual is not already uploaded.

Looking at the diagrams I found out that at TP3 (same with pin5 of IC803) instead if that rectangular signal, I have nothing but 5VDC and a negative or positive short spike whenever I'm starting or stopping the motor and 
Under the circumstances I suspect IC803 is defective.  The bad thing, IC803 is NPC SC8043.  Also I wonder if the crystal is fine (except that I wonder what can be wrong with a crystal after some short circuit).

Does anybody have any more suggestion?

Also, where can NPC SC4043 be sourced?  Also, a crystal 9.054MHz?

Thanks in advance,
Corneliu
EGM-10 Gitárerősítő
Sziasztok! Szeretném kérdezni, hogy milyen tapasztalatok vannak a fent nevezett erősítővel kapcsolatban. A fiamnak venném meg. Még kezdő gitáros, itthoni gyakorlásra kéne. Köszönettel: Péter
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