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Thunderbird Club

It's a MRX Phase (Block letters) 90, and was made by MXR nor Dunlop I believe. I bought it used in the early 80s. No sound at all now Chuck. For a few weeks out of the blue it would pop loudly through the cab after being engaged and I would click it back off, just thinking it was something with a cable or power supply. I brought it home to see if it happened there too. Nothing at all now. AC or DC makes no difference. I thought some solders now covered by the e-tape may have been touching the metal box from the foam being shot, but I don't think that's the case now. Possibly something got cooked. I can't complain really it served me well since the very early 80s. We all gotta go at some point!
got it…let me find a schem….contrary to what one would think the “no sound” problems are the simplest to diagnose…..worst case, unlike the V4 you can send it to me.
 

I think the closest thing I have to match is a jazz...

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got it…let me find a schem….contrary to what one would think the “no sound” problems are the simplest to diagnose…..worst case, unlike the V4 you can send it to me.
That's so kind (and typical) of you. I didn't intend on you doing that at all. I certainly got my money's worth out of it!