I finally got around to replacing the memory chip. I bought two from vintage planet on ebay.co.uk (Hi Senso!), which arrived very quickly. Unfortunately so did the ‘flu.. Anyway, I whipped the memory chip out using my usual Duratool Soldering kit and desoldering pump. 5 minutes max, I’m getting good at this now! I was … [Read more…]
Last night, while browsing for something else entirely, I came across RAKITS. They make interesting electronic music kits, such as Drum Synth, Mini Sequencer, Atari Punk console, ect. I’m most interested in the drum synth, which is a clone of the AMDEK PC-2 from years ago. It has a trigger input, so I can hook … [Read more…]
This may or may not be the SR-99 I replaced the battery clip on in an earlier project. There’s a video associated with that: https://www.synteknik.com/samples/edc-sr99.3gp Anyway, although it appears to work, there’s no sound (there’s none on the video either..). I’ve had it in bits, and although I can see a replaced 4011 sitting in … [Read more…]
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 TC5501P. So, 22 pins to desolder using my Duratool soldering iron and tools. The desoldering pump did the job yet again, with some cleaning up of the holes. My IC … [Read more…]
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 details with photos tomorrow.
I’ve found a way to separate the News, Projects and ebay listings.. I think it’s rather smart: New Homepage
I noticed yesterday that all the ebay links at the bottom of the posts were returning a “forbidden” error. The links were generated by the “wordbay” plugin, which I’ve been using for years, but has now been superceded by something much better. However, I used wordbay as I was in at the start, and therefore … [Read more…]
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 soldered in the new one, knotting the cable as cord relief, as per the original. I can now get the battery holder in and out easily. I also got the … [Read more…]