CRG | Amiga Sick Hundred - Part 3 - Composite Fix and Building a Chip RAM expansion @CRG | Uploaded February 2023 | Updated October 2024, 5 hours ago.
Its time to finish off the Amiga 600, we need to sort out the lack of composite video and I’ve got a 1MB chip ram expansion to build.
Massive thanks to Mark Brown (Supaduper) for sending us the parts needed for the composite mod along with a spare keyboard membrane.
The new video encoder is a Sony device, part number CXA2075M. To complete the mod you need a 2.61k ohm metal film 1% resistor between pins 12 and 17.
This composite mod can also be applied to the A1200 using the same parts and methods. YouTube channel @BranchusCreations has an excellent video on it here - youtube.com/watch?v=e2QI1_YjQSo
CRG Twitter - twitter.com/YT_CRG
CRG Patreon - patreon.com/user?u=13919007
CRG Discord - discord.gg/3hEzUxTxWV
End music - Modspire by Naokis - @NaokisRC
Music bed - Some Assembly Required by @Momentvm
Chapters
00:00 Intro
01:29 Quick fix of the LED cables
03:01 Composite fix
04:20 A massive thank you
05:13 Composite fix
13:20 Explaining the mods for the composite fix
17:01 Chip RAM expansion build
19:30 SMD soldering time
23:10 Mini soldering montage
24:12 LED?
25:36 Mini soldering montage
26:10 Polarity for a tantalum?
26:45 Straightening up
27:21 Through hole soldering
30:20 First test
31:00 Well there’s the problem
31:48 Second test
34:55 Conclusion and Credits
Its time to finish off the Amiga 600, we need to sort out the lack of composite video and I’ve got a 1MB chip ram expansion to build.
Massive thanks to Mark Brown (Supaduper) for sending us the parts needed for the composite mod along with a spare keyboard membrane.
The new video encoder is a Sony device, part number CXA2075M. To complete the mod you need a 2.61k ohm metal film 1% resistor between pins 12 and 17.
This composite mod can also be applied to the A1200 using the same parts and methods. YouTube channel @BranchusCreations has an excellent video on it here - youtube.com/watch?v=e2QI1_YjQSo
CRG Twitter - twitter.com/YT_CRG
CRG Patreon - patreon.com/user?u=13919007
CRG Discord - discord.gg/3hEzUxTxWV
End music - Modspire by Naokis - @NaokisRC
Music bed - Some Assembly Required by @Momentvm
Chapters
00:00 Intro
01:29 Quick fix of the LED cables
03:01 Composite fix
04:20 A massive thank you
05:13 Composite fix
13:20 Explaining the mods for the composite fix
17:01 Chip RAM expansion build
19:30 SMD soldering time
23:10 Mini soldering montage
24:12 LED?
25:36 Mini soldering montage
26:10 Polarity for a tantalum?
26:45 Straightening up
27:21 Through hole soldering
30:20 First test
31:00 Well there’s the problem
31:48 Second test
34:55 Conclusion and Credits
