Lately I have been seeing many Amiga 600 and Amiga 1200 with bad Band Pass Filter (Z221) and Delay Line (Z222). This generally causing bad picture quality on composite and the RF-modulator. There are many suggested solutions out there but none that really replaces the Z221 and Z222, until now. While attending to Datastorm 2018 ... Read More
The Apollo 1260 Voltage Regulator is needed when an upgrade is made on a Apollo 1240 from 68040 to 68060 CPU. This is because the 68060 used VCC 3.3V instead of VCC 5V. I based the design around the LM1085 voltage regulator that I find to be very good, but size is a bit bigger ... Read More
Over the past months I have been asked several times regarding the Blizzard PPC Heatsink I made. I have decided to release the files, but they have to be modified, else the heatsink will not fit in the A1200 desktop case. The modification that needs to be done is simply remove the following cooling stubs. ... Read More
I have decided to share all my own creations for Amiga and a first step is to release the INT7 (Level 7) PLCC adapter for Amiga 600/1200/4000D(T). This is perfect when using for example a custom Amiga Kickstart ROM with HRTMon in it, or when using for example AsmOne/Pro with INT7 interrupt enabled. Personally I ... Read More
Please note that this is obsolete! Please check the following replacement instead: CXA2075 For those who repair and/or change electrolytic capacitors on Amigas has probably sometime bumped into bad Z221 and Z222 which is the band pass filter and delay line. These components are cruical for the RF and Composite video output. When they are ... Read More
So I have been absent for quite a while now, but I promise that it has been for a good reason. Been busy with work, Amiga development (both hardware and coding) and all other things you not sitting at a computer. Recently I have done a few re-caps and Repair of spare A1200 boards and ... Read More
A new year and possibly many new projects that will be done and also new ideas that will take place. Last year was rather hysteric and this blog one one of many things that I had to put on my “to-do-list” (sadly). Anyway, I atill managed to finish many projects and only a few of ... Read More
Ok, I admit it. It has been way too long since I posted something new here but it has been a very hectic fall/winter at work. A few project will be put up here but before that I finished a cap-map for the Amiga 600 version 1.5 PCB. Some capacitors are tricky, especially the two 22uF ... Read More
I had the chance to re-cap my first CD32 this weekend and it was a version 3. The amount of capacitors reminded of the Amiga 4000T and some of them was put in very narrow spaces. Did a cap-map that can be used as reference by others (inclusive myself). Hi-Res Version Hi-Res Version
A while ago, a friend of mine asked me if I could help him to draw a Voltage Regulator for the ACT Electronic Apollo 1260/4060 cards. Unless you need to replace your current Voltage Regulator it is also used when you upgrade a Apollo card from 040 to 060. This is is because of that 060 ... Read More
I recently purchased a A.M.A.S Sampler/Midi from a fellow Amiga friend on Facebook. The overall condition of it was very good, but the parallel and serial cable was loose inside the case. And of course they both fell out at the same time when I opened it up so I can no chance to see ... Read More
So there is this thing with old plastic gears and how it get yellowed by time. You don’t need to be a smoker, since it will occur anyway due to a fire-retardand substance called bromine combined with ultraviolet (UV) light. The solution to this is to have a solution of hydrogen peroxide and expose it to ... Read More
