Another DR-55, and a couple of Soundmasters, added to the list..
Found a box in the garage containing a (dead) DR-55, an SR-88 (untested), and an ST-305 (untested). SO, I now have THREE DR-55s (at least), […]
Boss DR-55
Boss DR-55 capacitor change to allow use of TC4011B chips..
From a thread on electro-music forum: “The CD4011 is a bit fussy … a few years ago I repaired one of these machines with a […]
Boss Dr-55 memory chip replacement. (TC5501P)
This turned out to be remarkably easy! Step 1: de-solder the existing memory chip. This turned out to be an NEC equivalent of the Toshiba […]
Boss DR-55 memory chip replacement. TC5501P
I have now successfully replaced the memory chip with a new Toshiba TC5501P. I’ve installed it in a socket and it all works. Result! Full […]
Battery Clips & Testing | Defective tc5501p ?
I have replaced the battery clip with one that doesn’t have the pp3 clip on it, to save space. I unsoldered the old one, and […]
The ‘mare continues..
I ordered a replacement battery holder for the DR-55. Firstly, it’s too long. I can force it into place, but need pliers to get it […]