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WELLS-GARDNER 6B7-4 SCH

AUDIO - SERVICE MANUAL
Type: (PDF)
Size
110.2 KB
Page
3
Category
AUDIO
SERVICE MANUAL
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  • Also known:
    6B74 74 WELLS GARDNER 6B7 6B7-4
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  • See related repair forum topics below. May be help you to repair.
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Relevant AUDIO forum topics:
Victor QL-Y77F motor speed unstable
I have a Victor QL-Y77F turntable that one day started to miss the speed lock.  Even when the motor is in stop mode, the platter still rotates a little bit (random actually) backwards.  When is in START mode (33 or45rpms) the speed randomly jumps from green to red and back, meaning from stable to unstable.
I tried to replace the Crystal and then the Hall generators but with no luck.  Actually without the service manual is pretty difficult.  Do you have any ideas what to do further?

TIA
Corneliu
Pioneer DEH-P8600mp kapcsolót keresek (vagy előlapot)
Pioneer DEH-P8600mp -hez keresek jobb oldali (menü) jeladót. Típusa: Alps RKJXT1F (4 irányú kapcsoló, encoder, nyomókapcsoló) Olyan cím (forgalmazó) érdekelne ahol ez tuti beszerezhető.... Köszi a segítséget! http://www.alps.com/WebObjects/catalog.woa/E/HTML/MultiControl/Switch/RKJXT/RKJXT_list.html
Pioneer VSX-321 erősítő HDMI fogadó része nem működik
Sziasztok!

Van nálam egy Pioneer VSX-321 5.1 erősítő. A HDMI nem működik, a forrás nem detektálja az eszközt, nincs hang.
Optikai bemenet működik, szól az erősítő.
Egy 3.3V-os stabilizátor, ami a kontrollert hajtotta csak 2V körül adott ki, ezt cseréltem, most 3.3V (IC207 NJM2831F33). A többi táp is jónak tűnik.
A kontroller I2C lábain 0V-ot mérek, kommunikációt nem látok. Ugyanígy gyanús, hogy a HDMI csatinál is 0V-ot látok az edid lábakon. Felhúzó táp megvan mindkét esetben.

Itt elakadtam.
Van esetleg valakinek tippje, hogyan tovább?

Köszi!
SAM300D subwoofer táp IC zárlatos(Megoldva!)
Sziasztok! Kapott egy túlfeszt és elszállt a két puffer kondi, meg a táp vezérlő SMD IC. Sajnos le van csiszolva a teteje. Két FET-t hajt meg. Van-e rajza valakinek? Mindenkinek köszi a segítséget, jó lett!
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