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Hi
I'm looking for a schematic diagram for this equipment:
Professional Power Amplifier XA-1000

The main fuse was blown and according the owner it blowns again after replacement.
He used a 40 amp fuse. The original fuse is not around anymore and there is nothing written outside on the label. So it's somewhat a lottery about the correct fuse rating.

Anyway, I would like to repair this equipment but without a diagram it would be a pain and nearly impossible.
Tryed to find a diagramwith Google search - negative. Also the manufacurer ist unknown this days.

Maybe a reader has more information aboutb this.

Thanks a lot
Redwood (74)

https://www.simplysoundandlighting.co.uk/bst-xa1000-1000w-power-amplifier


 

Hello everyone, I'm having issues fixing this vintage stereo system, its amplifier boards seems to not be amplifying. The audio comes out at super low volume with the max. volume setting (the pot. works correctly). At first I had 20V and a constant hum coming out at the speakers output (saturated amp. I supossed). I changed the electrolytic caps., the 5218P component (TL082 replacement) and the NPN/PNP C1815 and A1015 transistors (this last thing helped with the amp. saturation and I do not have any DC at speakers now), but now the audio comes out super low. I measured the D1265 transistors off-board and they seem to be ok. Can anyone shed some light? Thanks in advance

Hi everyone

Could somebody tell me if I can replace a switching diode to another one, the one installed in the onkyo is a 1SS252 and is 10 times more expensive that a 1SS355.

Usually I order the same but they are pricey (around 10.00 usd for a 100) and not commonly used, not many sellers.
For the 1ss355 every seller on line has it in stock and it's around 1 to 2 usd for a 100.
Ans they are available locally, not in china waiting 5 weeks for the part.
Thank you.


1SS352
Characteristic Symbol Rating Unit
Maximum (peak) reverse voltage VRM 85 V
Reverse voltage VR 80 V
Maximum (peak) forward current IFM 200 mA
Average forward current IO 100 mA
Surge current (10ms) IFSM 1 A
Power dissipation P 200 (*) mW
Junction temperature Tj 125 °C
Storage temperature Tstg −55~125 °C

1SS355

Characteristic Symbol Rating Unit
Maximum (peak) reverse voltage VRM 90 V
Reverse voltage VR 80 V
Maximum (peak) forward current IFM 225 mA
Average forward current IO 100 mA
Surge current (1s) IFSM 500 mA
Junction temperature Tj 150 °C
Storage temperature Tstg −55~150 °C
 

Sziasztok! Valaki tudna segíteni? SAL WRC200 autó erősítő kapcsolási rajzot keresek. Olvastam, ebben a témában volt már fórum de rajzot ott sem találtam. A gondom az, hogy nem indul el a kütyü, védelem nem engedi. TL494-et már cseréltem de szerintem az eredeti se volt rossz. Az IRF feteket jónak mérem a PT35C, PT36C tranyók is jónak látszanak. Volt néhány "kínai" forrasztás amiket kijavítottam, de továbbra sem működik. Az esetleges segíséget előre is köszönöm. Üdv:Laci