Fun fact: You *can* use a new 5V VIC in older-revision C64s which expect 12V VICs. Bend away pin 13 (so it does not receive 12V from the socket, this would roast the chip) and feed 5V from the other supply pin via a short wire. I received a breadbin C64 with an old 250407 mainboard with that hack having been installed - apparently the old VIC was defective and only a new VIC was available for repair.

Really nice and informative video! As all your videos. Thanks to you and Periphrastic, I got back the wish to fix my old commodore and acorn machines :-)

I didn't know that the vic2 chip had different voltages between revisions. Love the brown keyboard in the cream case . Your Phillips monitor looks brilliant 😋 nice vid Jan as always😋....Kim

Don't know the history of this machine, but the other day I saw an ad in a swedish magazine that advertized an upgrade to a 64C from an old breadbin. You could bring the machine to them, they would then replace the case for you. Given that it was a licensed vendor I assume they also could have added a new warranty sticker.

Another video from Jan :) I must admit i wonder how the incorrect chip ended up in the board.Great that you brought it back to life :)

Nice work, thanks for the heads up!

it certainly had been opened before since the aluminium coated cardboard RF protection 'board' has been cut off

The casing with this kind of clips is the same used for the all-in-one Archimedes BBC A3000 but with 2 screws at the back and one underneath.

Realy enjoyd watching this and learning a lot :) Also posted it on my Dutch website so more people can check it.

Very nice and informative video as always!

Great video. I never knew about that case! I knew Commodore was cheap but wow. That takes the cake. I had no idea they were THAT cheap.

New Jan Beta video? Instant upvote before even watching!!

If only I could be as cool as you Jan. Thanks for the video man \m/ :)

Great as always Jan!

Commodore did some strange things. I just bought a 1541C off a guy and it has a beige case with a brown drive and he said that's how it was when he bought it new.

Great video Jan!

I use to have same one you have i wish I still had it. i do still have c128 how ever sound don't work any more. thanks goodness c64 Mini came out

That's interesting. I've never seen a C64 (and I have 21 of them) that had a warranty sticker on it aside from the large square serial number sticker which mentions a warranty. And last night I found out that one of my C64Cs has a regular C64 motherboard in it, based on what the service manual says about board revisions. I never knew that.

just a little reminder for a request: to show the difference between earlier and later sid chips with the sampling playback differences they had, and a little bit about the workaround. as a c64 owner i remember reading this at the time, but i had an earlier 64 so i had no problems, so never knew the reality of it

Greetings from Hessen! My interests are more in the microcontroller, audio and FPGA direction, but I watch your videos regularly.

same type of board that I just repaired, mine was black screen due to band ram

please help me i ahve a commodore c64c black screen , i opned it up and found a blown diode , i have replaced it but its still showing black screen please help

I made my own generation conflicts by swapping parts from faulty units to make working ones

Do you have the pinouts for the 8562 / 8565?

First time i tried a dead-test / diagnostic cartridge i was like "holy hell, everything is broken", then i learned about the harness. Ironically, the CIA chips that appeared broken in the computer i tested first - were actually both broken.

Aaah an Ave watcher. Interesting unit

fortunately you had a spare chip but it might be hard to acquire a new one for your spares collection since I think most C64 chips are not manufactured anymore. I hope people with dead and still half-populated C64 boards will think of you and send them to you.

Anyone else hear the high pitch CRT noise about 10:40 in? My other half says i'm deaf, but I can hear my old CRT monitor making that high pitched noise (and the buzz that some light bulbs/chargers make). I shouldn't be able to at my age apparently.

Hi: A bit off-topic but I would like to ask you where should I take 12volts dc from in my 250407 rev.C mobo. It's important for the mod I'm planning.

Does it matter which way you put the vic chip in? How do you know which way it should go?

Ah, it's nice to have a simple fix once in a while. You were on-the-ball to spot the 6569 VIC-II on the board. Was @_Scoosie_ aware of the incorrect VIC-II version before sending this donation? What other goodies did he generously donate? *rubs hands eagerly*

I have a breadbin ASY# 250407 Rev B board, it seems fine when powered up, can type a little program and run. When I put a cartridge in it, it goes black or garbage screen. PLA has been replaced, VIC II and SID have been swapped in to working machine, all okay. Any ideas?

No C64C had the brown keyboard. Period.

If you use a 656X VIC-II on C64c boards, there won't be a display. If you use a 856X VIC-II on the old boards then the 12V on pin 13 will destroy them.

How could possibly has this C64 ended with a wrong vic? somebody just throwed some random pieces together (keyboard, VIC, case, etc.) just to see what happens? :D Sometimes i'd love to know the history of some pieces of hardware that come to my hands, because once in a while a weird piece like this appears. I once found a casette tape in a garage sale where the tape itself had been removed and replaced by a circuit that, when put into a casette player, played a sinodal wave of a given frecuency. Who did that and the purpose of it remains a mistery to me.

Nice job again :)

'Contaaaaaaaccct' (Predator the movie) ;-)

That screens noise! O.o

Let me know if you have an aldi c64 for sale jan please. Thanks

10:01 That's what she said!!1 :D

Cue the anguished cries of nerds everywhere as the usually very careful Jan blows moisture into those contacts. :)

4.40 firebrigade.

Hey people, if you watch this video, and you see this comment, write a comment, just say anything, comments help channels grow :)

Great video. +1 Sub here, great channel.

The OCD person inside of me cringes to see that torn-off cardboard under the short board. Seems like you'd get better convention cooling by taking that out, right?

First 👍🏻😂

...und warum nicht in deutsch?