I have this 5.1 speakers Xwave Theatro. Old, but very good speakers.
The thing is that in order for speakers to work I need to keep stand by button pressed. It used to turn on and off with touching the button. Now I need jammed toothpick 🙂
Only IC-s are PT2259A which is remote control/volume, I guess from looking in datasheet. Second one is basic logic 4013. I changed that one but it still does not work.
With button pressed, there is sound but power led does not glow.
The thing is that in order for speakers to work I need to keep stand by button pressed. It used to turn on and off with touching the button. Now I need jammed toothpick 🙂
Only IC-s are PT2259A which is remote control/volume, I guess from looking in datasheet. Second one is basic logic 4013. I changed that one but it still does not work.
With button pressed, there is sound but power led does not glow.
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You'll have to find out how the soft power circuitry works there. I assume the power tact switch is hooked up to the 4013 flip-flop but for some reason that isn't doing its job. Look for low/missing supply voltages, might by a leaky electrolytic as well.
Where do you see a 4013 flip-flop? I see no 14-pin DIPs anywhere.
One option would be to solder wire links across the power switch... Ghetto but it would work.
Tom
One option would be to solder wire links across the power switch... Ghetto but it would work.
Tom
What about the guy right in the middle of the board?
Though looking at it again, I'd rather be expecting a quad opamp in that spot, would make more sense with the tone controls and all...
Oh look, the board says JUSTER. These guys used to make a whole bunch of PC speakers back in the early 2000s (and would have been the actual OEM here), I wonder what happened to them?
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I don't think it is "soft power". I think that 18-terminal switch IS both power and mute.
When you work it, a little U-wire in a V groove right behind the button goes one way and the other to latch the button in. Same as the click in a retractable pen. The gizmo goes bad. See if you can set it back in the groove. But sometimes a toothpick IS the solution. (You may be able to jam the switch inside, so the toothpick isn't sticking out where it gets lost.)
When you work it, a little U-wire in a V groove right behind the button goes one way and the other to latch the button in. Same as the click in a retractable pen. The gizmo goes bad. See if you can set it back in the groove. But sometimes a toothpick IS the solution. (You may be able to jam the switch inside, so the toothpick isn't sticking out where it gets lost.)
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