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HAFLER DH-202-222 BRIDGE SM.

AUDIO - SERVICE MANUAL
Type: (DJVU)
Size
114.5 KB
Page
4
Category
AUDIO
SERVICE MANUAL
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  • Also known:
    HAFLER DH-202222 SM. DH202222 BRIDGE DH 202222 202 222 DH-202-222
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Relevant AUDIO forum topics:
ZOOM H4N "félig indul el"
Sziasztok!

Zoom H4N audió felvevő teljesen nem indul el.
A "BIOS" verzió (1.90) megjelenik a képen,
a system nem töltődik be, nincs "homok óra" , csak az elem kivételével lehet kikapcsolni.
Az USB porton kommunikál a számítógéppel, és a benne lévő memória kártyára lehet másolni.
Frissítettem firmware-t de nem változott a működése a hangfelvevőnek.

Ha valakinek van tapasztalata a javításhoz   .... ?
 
Ágota DS 600 mechanikus felépítés, helyreállítás
Sziasztok, kedves Kollégák. Egy Ágota DS600 viseltes erősítőt állítok helyre, azonban nem tudom, hogyan volt rögzítve a tápegység panel. Ha valakinek van egy fényképe róla megköszönöm. Illetve ehhez a panelhez keresek kapcsolási rajzot. A híd kapcsolóm hiányzik ezt szeretném helyre rakni! Köszönöm
 
Samsung HTX30 Házimozi
Szevasztok! Tud-e segíteni valaki egy darab végfokmodullal, melynek a száma: AH41-01031B. A szokásos rongyá égett végfok IC alatt minden nyák..... Köszönöm Ferike
Rotel RA-980BX equivalent transistors
Hi All,


I have a Rotel RA-980BX amp with a blown channel. I have sourced most of the transistors, but am struggling to find the other 4.


Part numbers as follow:
2SC3478
2SC4381
2SA1376
2SA1667


What would be suggested equivalents / suitable replacements?


Also, some advice, I suspect the bias pot to be bad. Based on the circuit, would you think that the bad bias pot would cause the drivers and outputs to blow? Any suggestion on modification to prevent this re-occurring?


Thanks



Regards,
Werner
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