BossAreaForum

You don't really need an alligator clip for the ground. My audio probe consists of a standard jack (that I put a patch cable into), the capacitor and the wires, pretty much like in the lower picture of the link that Laurie posted.

The parcel service DHL has informed the seller that they weren't able to find our parcel with the FDR-1. :( That was in January last year. It was a deal for around 90 or 95 EUR including shipping and the FDR-1 was lost right at the start of the shipping (someone must have stolen it in the post offi...

I left the unit powered for over two hours and it is working without the slightest fault now. I'm so relieved! Thanks so much again for finding the culprit, Laurie! :ugeek: Next step will be a modification of one of my three spare KORG FK-3 volume pedals to build the missing treadle control with the...

Your comment " lifted the resistor a bit, because the legs are insulated for the most part " is familiar. I've seen that before. Resistors from the ~1970s with painted legs looking like they have a good solder joint, but the paint is causing issues. I've had to scrape the paint off the resistor leg...

Oh, I had expected the follow-up model to be more silent. I really liked what the AC-2 did when I had one.

Yay!

I am massively surprised. Apparently it is NOT necessary ordering a replacement part! :o I exchanged the photo couplers for the LPF and the HPF and reflowed the two solder spots of the 100Ω resistor next to the replaced diode (I lifted the resistor a bit, because the legs are insulated for the most ...

:cry: I bet that it is very hard finding a substitute for the HTV P873. Just replacing it with another 5-pin photo coupler like this one wouldn't make too much sense, I fear? Could I swap the two photo couplers to see if the problem shifts to the high pass filter? Or is it not recommended (because o...

Groan! I replaced the diode and in the first minutes it sounded like it was a full success. I was almost doing a little jig, but then the stupid fault appeared again! :evil: With Balance fully turned up the sound becomes completely dull. It doesn't vanish as I wrote earlier, so it is indeed the LPF ...

I resoldered all the connections and the tracks. Twice. That's why I was suprised that there was still a fault.