Service manuals, schematics, eproms for electrical technicians
PARK 1231 20W AUDIO PA SCH
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210.3 KB
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AUDIO
SERVICE MANUAL
AUDIO
SERVICE MANUAL
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Looking for similar park manual?
Good luck to the repair!
Please do not offer the downloaded file for sell only use it for personal usage!
Looking for similar park manual?
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PARK AUDIO PA 1231 20W 20
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Relevant AUDIO forum topics:
Sziasztok!
Szeretnék érdeklődni, hogy rajtam kívül, javított-e valaki ilyen erősítőt végfok hibával, és sikerült-e beszereznie hozzá alkatrészt??? (STK1039)
A tápegységet, a tanyás rajz alapján sikerült kijavítanom (köszi) :D el is indult, viszont végfok alkatrészt nem találok hozzá!
Bármilyen megoldás, ill. helyettesítő alkatrész info érdekel!
Előre is köszi!
Üdv: Zsolti
Hi,
Mine sony amplifier TA-F444ES needs a (alphs) balance potentiometer pn 1-228-905-00 res,var,carbon 50k/50k with center detent.
Anyone who knows a reliable source ? shaft 6mm length shaft 2cm diameter potmeter 16mm
Mine sony amplifier TA-F444ES needs a (alphs) balance potentiometer pn 1-228-905-00 res,var,carbon 50k/50k with center detent.
Anyone who knows a reliable source ? shaft 6mm length shaft 2cm diameter potmeter 16mm
Hello everybody,
This receiver starts normally and has a nice blue display lighting on for 8 seconds. Suddenly you ear the main relay falling down and everything turns off and you get the red led flashing around the main power switch button. There is no special code with this continuous flashing rythm of the led. I have no diagram of the device and I have opened it and measured the voltage on pin 4 of the voltage regulator KIA78R05P1, which has a validating signal on his pin four.(2 is the output and 3 is frame (-)).this 5V(to-220)monolithic 7805 regulator is on the main PCB, close to the little transfo and ON/OFF relay...and is mounted without any heat dissipator(I was surprised of that fact!).the voltage between(4-3)is 1,88V dc and never climbs up during the starting sequence.
Can you help me to solve this problem?
Sziasztok!
A képen látható futóműből a nagy fehér fogaskerékre lenne szükségem.
Ha valaki tud segíteni előre is köszönöm!
Üdv. : laci
A képen látható futóműből a nagy fehér fogaskerékre lenne szükségem.
Ha valaki tud segíteni előre is köszönöm!
Üdv. : laci
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