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szep napot ennek a suwoofer bekotesen elakadtam,...pontosabban azert,mert harom kivezetes talalhato a POWER jeloles alatt-GND REM BATT hogy is van ez? honnan szerezhetnek rajzot,manualt ehhez a szerkezethez? koszonom,hogy foglalkoztok a temaval

Sziasztok! Egy Blaupunkt Travelpilot DX-R70a tip. autórádió-cd-hez kellene key-card. Kérem, ha valakinek van, tud segíteni, jelezzen. Köszönettel Attila

Sziasztok! Segitséget szeretnék kérni, e készülék kapcsolását sehol nem találom, a toroid trafóból jönnek áramok, de nem tudom mik a pontos adatok,egyébként az alaacsony jelszintű bemeneten működtetve fullon nagyon halkan szól!

Want to share: Have downloaded the schematics from this forum to help repair the amplifier of a friend. Turned out that Sony decided to route the earth through the chassis, even the earth between the various supplies. When one takes the main board out of the chassis and switches the amp on, there are up to 20 volts difference between the eart (and hence reference) of the pre-amps and the main amps. Luckily the amp goes into protection but from a design point of view it is not nice to rely on screws and aluminum face plates to conduct up to 0.2 amps of current from one supply to another. What I did is solder wires to every eart point and connected them on the main board to make it stand alone and not rely on conducting current through the chassis anymore. Bad design, simple repair but took some digging in the schematics to find out what exactly was going on!