C64 Repair: A Choice of Three Possible Faulty Chips and how I decided which one was faulty!

A C64 Repair with a twist!
Trying to pin down the fault in this Commodore 64 using nothing but the power of my mind and a workbench full of tools. Also the internet. And experts I can ask for advice. Apart from those things, just the power of My Mind! And my eyes. Those helped too. Completing the repair of this C64 first seen in the Topdon thermal camera episode.
Universal Retro Boss Paul
/ underwulde123
www.ebay.co.uk/usr/universalr...
Sven Petersen
/ svenpetersen191
tech.guitarsite.de/c64_scope.h...
C64 Pictorial Fault Guide
www.pictorial64.com/
Music kindly created by Momentvm
/ @momentvm
Website
www.morefunmakingit.co.uk/
My Twitterings can be found here
/ zzleezz
Discord Channel
/ discord
Ko-fi page
ko-fi.com/morefunmakingit
Amazon Wishlist
www.amazon.co.uk/hz/wishlist/...
Patreon
/ morefunmakingit
00:00 Introduction
01:31 Inspection
03:03 Sven Helps
04:12 Removing U28
05:54 Testing U28
06:50 Spinning a Coin
07:33 Removing U24
08:34 Will it Work?
15:40 Signing my Art
17:00 The End
#c64 #commodore64 #computerrepair

[@domramsey]

Another C64 saved! I'm interested in seeing case clean ups. Always interesting to see people's methods and very satisfying to see a before and after.

[@MoreFunMakingIt]

I'll throw a cleanup in occasionally when it's interesting. Just for you 😉

[@TheRetroChannel]

Nice work. I'd recommend also running the SID tester program by Andrew Challis, it can reveal issues that the regular diagnostic test will not. Also the police are on their way

[@MoreFunMakingIt]

I'll look that up! Have a marginal SID here I can try that with. They'll never take me alive!

[@StewiesRetroGaming]

Hey buddy! Been really enjoying these C64 repair videos of late. Really entertaining and always great to see another one resurrected by your good self. So many great tips being picked up along the way. Superb stuff mate. Have a great weekend 🤟👍😎🍺🏴󠁧󠁢󠁳󠁣󠁴󠁿

[@MoreFunMakingIt]

Thanks Stewie! Loads more to come!

[@sma7530]

Glad I bought a memory chip tester as I'm having the same multiple issues with the 7 Speccies and 7 C64s I have to work on (collect them for some reason), so a good, relevant video for me

[@MoreFunMakingIt]

That sounds like the start of an epic journey, and possibly the title of a musical 😁 Good luck!

[@RudysRetroIntel]

Great job on the repair!! After working in many C64 myself, I have found that the dead test memory flashes are a hit and miss. The more you fix them, the faster you repair them. Thanks for sharing

[@MoreFunMakingIt]

Thanks Rudy! It's starting to be unusual whether dead test gets it right!

[@Breakfast_of_Champions]

Nice. The rusty one I thought was suspect as whatever liquid might have creeped inside?

[@MoreFunMakingIt]

It's not so much the liquid gets inside, although I'm sure that could happen, rather than the legs corrode and that works it's way inside. I was sure it was going to be faulty!

[@miguelrios4602]

Thanks for the video. I appreciate it. Can’t tell you what I am learning, but I’m learning something 😊 Again, thanks!

[@MoreFunMakingIt]

Learn something random every day! Welcome 😁

[@CurtisOvard]

Another good one Lee, I introduced my 13 year old to retro repairs.

[@MoreFunMakingIt]

That's wonderful Curtis! Would love to know how that went.

[@CurtisOvard]

@@MoreFunMakingIt He was just in awe at how big everything was and how little storage was. It was funny when I handed him my 1541. I was watching this and an LGR 386 computer and he started asking what was going on so I broke out some of my stuff.

[@MoreFunMakingIt]

@@CurtisOvard That's so cool. Great that he's taken an interest and amazing he has you to show him how things used to work!

[@ghost-retro3733]

Good fix!

[@stevesgaming7475]

15 seconds in and I said "U24 is faulty" ..you believe me ..right? ;) (great video as always, thanks!)

[@MoreFunMakingIt]

I believe!

[@michaelcarey]

Great video! I can't get enough diagnostic videos like this, well done. I am wondering about the RAM tester seen at 07:57. Can you tell me where to find more information about this device?

[@MoreFunMakingIt]

Thank you Michael! The ram tester I bought from a seller on ebay - www.ebay.co.uk/usr/analog-kid?_trksid=p2047675.m3561.l2559 They do a range of different ones. Hope that helps!

[@user-wk5pq7et3d]

Отличный метод ремонта - подкинуть монетку :-) Надо взять на вооружение!

[@MoreFunMakingIt]

It worked so it must be good! 😁

[@wimwiddershins]

Always trust in the washer of fate.

[@MoreFunMakingIt]

The Washer of Fate is now a permanent tool in my workbench.

[@CallousCoder]

Word... no father... Euhm so you are trying to say “you orphan”? Sorry for my ignorance Lee, English is only my second language ;) Awesome video as usual, great relaxation after a stressy morning my retro friend! MFMI does that stand for m*ther f*cking machine inspector? :P

[@MoreFunMakingIt]

You got the first two words right 😆 the second two are interchangeable depending on what I've broken

[@primokarmasilver]

Will you sign tacos

[@MoreFunMakingIt]

Yes. And then I will eat them