More Fun Making It | ENDURO-REPAIR part 2 - ZX Spectrum Repair 48k @MoreFunMakingIt | Uploaded January 2023 | Updated October 2024, 6 hours ago.
The pile of five mostly broken ZX Spectrums is reduced by another one!
In this episode, I manage to track down the fault using a combination of diagnostic testing tools and an oscilloscope. Faulty ram chips can sometimes trash the system so badly it's just about impossible to track down the fault without removing components (see the next one in this series for a great example of this!).
I never claim to be an expert, and I don't want that label. It carries too much responsibility. The purpose of my channel is to share my journey. If you accidentally learn something that's all on you.
Second Channel (NEW👀)
youtube.com/@UCp_nZTSh3Pw6bkMztszyPmg
Jan Beta
youtube.com/@UCftUpOO4h9EgH0eDOZtjzcA
Adrian's Digital Basement
youtube.com/@UCE5dIscvDxrb7CD5uiJJOiw
Velociraptor Dave
twitter.com/Velocir35149743
This Week In Retro Podcast
youtube.com/@UCFMx-JitepTttWc-ABHhu8A
Retroleum (Parts supplies)
retroleum.co.uk
Second Channel (NEW)
youtube.com/@UCp_nZTSh3Pw6bkMztszyPmg
More Fun Making It Website
morefunmakingit.co.uk
My Twitterings can be found here
twitter.com/ZZleeZZ
Discord Channel
discord.gg/FvWEhV9
Ko-fi page
ko-fi.com/morefunmakingit
Amazon Wishlist
amazon.co.uk/hz/wishlist/ls/I5EGNMXIW5PC?ref_=wl_share
Patreon
patreon.com/morefunmakingit
00:00 Introduction
01:17 In We Go!
04:26 TR4 Testing BAD
05:48 First Switch on
06:00 Dandanator Diagnostics
06:45 Test ULA
07:12 Broke the ULA Socket!
08:34 Replace ULA Socket!
10:35 This Week in Retro Dave
11:53 Oscilloscoping We Go!
15:48 Removing IC19 Upper Ram
16:18 Lost a Pad!
17:23 Testing Upper Ram IC19
18:07 Removing the ROM
20:15 Lost ANOTHER Pad!
22:59 Diagnost ROM Testing
23:30 Removing IC10 Lower Ram
24:49 Testing IC10
26:49 Working Machine! Mostly...
29:42 Faulty Speaker
32:04 FINAL Testing
33:50 Goodbye!
#zxspectrum #computerrepair #sinclairzxspectrum
The pile of five mostly broken ZX Spectrums is reduced by another one!
In this episode, I manage to track down the fault using a combination of diagnostic testing tools and an oscilloscope. Faulty ram chips can sometimes trash the system so badly it's just about impossible to track down the fault without removing components (see the next one in this series for a great example of this!).
I never claim to be an expert, and I don't want that label. It carries too much responsibility. The purpose of my channel is to share my journey. If you accidentally learn something that's all on you.
Second Channel (NEW👀)
youtube.com/@UCp_nZTSh3Pw6bkMztszyPmg
Jan Beta
youtube.com/@UCftUpOO4h9EgH0eDOZtjzcA
Adrian's Digital Basement
youtube.com/@UCE5dIscvDxrb7CD5uiJJOiw
Velociraptor Dave
twitter.com/Velocir35149743
This Week In Retro Podcast
youtube.com/@UCFMx-JitepTttWc-ABHhu8A
Retroleum (Parts supplies)
retroleum.co.uk
Second Channel (NEW)
youtube.com/@UCp_nZTSh3Pw6bkMztszyPmg
More Fun Making It Website
morefunmakingit.co.uk
My Twitterings can be found here
twitter.com/ZZleeZZ
Discord Channel
discord.gg/FvWEhV9
Ko-fi page
ko-fi.com/morefunmakingit
Amazon Wishlist
amazon.co.uk/hz/wishlist/ls/I5EGNMXIW5PC?ref_=wl_share
Patreon
patreon.com/morefunmakingit
00:00 Introduction
01:17 In We Go!
04:26 TR4 Testing BAD
05:48 First Switch on
06:00 Dandanator Diagnostics
06:45 Test ULA
07:12 Broke the ULA Socket!
08:34 Replace ULA Socket!
10:35 This Week in Retro Dave
11:53 Oscilloscoping We Go!
15:48 Removing IC19 Upper Ram
16:18 Lost a Pad!
17:23 Testing Upper Ram IC19
18:07 Removing the ROM
20:15 Lost ANOTHER Pad!
22:59 Diagnost ROM Testing
23:30 Removing IC10 Lower Ram
24:49 Testing IC10
26:49 Working Machine! Mostly...
29:42 Faulty Speaker
32:04 FINAL Testing
33:50 Goodbye!
#zxspectrum #computerrepair #sinclairzxspectrum
