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DUCRETET C 285 2850 RADIO 1938 SCH

AUDIO - SERVICE MANUAL
Type: (PDF)
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383.0 KB
Page
2
Category
AUDIO
SERVICE MANUAL
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    DUCRETET 285 2850 RADIO 1938
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  • See related repair forum topics below. May be help you to repair.
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Relevant AUDIO forum topics:
Panasonic SA-HT520 nincs hang
Sziasztok! Van egy Panasonic SA-HT520 Home Theater szólt egy darabig azután kattant egyet és azóta tök süket. A vezérlő egysége nem ír ki semmilyen hibakódot, látszólag jó csak az Active Subwoofer nem szólal meg. Lehet végfok IC?
May be useful - Harman Kardon information
For your information to repair Harman KArdon HD710 Player uses a KSS210B Pickup (as spare, original unknown) can be changed without any other servicing Harman Kardon Receivers; Series AVR 2000,3000... "Looses memory issue"- gold cap at the front pcb defective. May be changed to a 1µ cap but you have to solder 3 other elko´s to the other side. Keeps memory for a longer time. "Hum noise for the first 5min, warm up" - right lower side at the main pcb: elko 7800µ dead- you can see it at the "cap of it". Replace both (7800µ and 2200µ) to new versions above 25V. "Fuse burnt voltage selection; no green led´s flash, no sound"- cap 2200µ make a short circuit (next to 7800µ). Change these elkos! If you want to make it better... change the 7x 10µ caps for the regulators too. Resolder all points there. "volume changes self to max. or min." change the two resistors at the front pcb close to the volume encounter. be sure that there are both sides 5V! "everything is functional but no sound; but sound from the 6.1ch in" TC9273N-07 is dead (shorted). Have a look at the two caps and the security resistors beneath this chip! My be dead too. Replace this chip only by the -007 version. others will not function. Be careful with the bigger stripe cable! the contact lines are loosen from the plastics. You can help yourself with a "second glue" under these contacts. So i hope i can help you... cheers SG.
Csöves készülékek építése, mérése
Üdvözlet Tanyalakók! Az interneten böngészve nagyon sok kérdést, cikket olvastam főkén csöves erősítőkkel kapcsolatban. Itt a tanyán nagyon sok e témában nagy tapasztalattal rendelkező "öreg" szaki van. Ebben a topicban értekezzünk ezekről a méltatlanul elfeledett és újra felfedezett eszközökről és adjunk segítséget azoknak a kollégáknak akik ilyen készülék megépítésére vállalkoznak! András67 A lenti topiknyitó lett áthelyezve ide. Kalex
Videoton EA 7386S PHONO állásban fél csatorna nem működik
Sziasztok Fent említett erősítőbe keresek HA 12017 című ic-t, ami a lemezjátszó előerősítőjében van (akár modult is). Köszönettel: Csaba
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