Quote:
Originally Posted by JohnH
I reckon the DFX and HDFX will have the same schematic, so if you can link to it, we can figure out if the headphone is driven by the main output. It would be good if it is, since it means the chip would be working.
John
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Hi
The schematic I found here:
ampix - Information
To me it seems like the headphone output may be driven by the preamp, but it is a long time since I read schematics like this, hehe..
But if everything was working ok, shouldn't there be sound on the speaker output with just about any speaker connected, and not only with a Marshall rack?
When I first looked at the pcb board with the 7293, it seems like the chip has been replaced before, so it is possible some of the printleads has burnt of before I soldered on it, But I think I got them all connected..
If the chip is broken again, it is not a big problem since I've got 4 more chips..