iFixit - Answers With Device "Commodore Desktop"

Commodore Desktop: Why is my Amiga 500+ not booting?

Fri, 11 Jul 2025 14:20:10 -0700

Hi, I should start by saying I’m 19, so older home computers were already dead by the time I started using a pc, but I have a passion for these older machines and I have learnt a little about them over the last year or two, though are still unfamiliar due to lack of use of them.

I recently got my hands on my dads old A500+ and it turns on, but won’t boot into Amiga DoS or Workbench(I believe it would have been Workbench 1.3 in ‘91 when this model was made).

It turns on, the drive light goes orange, the little motor in the drive turns a couple of rotations and it stops dead and the light goes off

I have found the battery for the RTC has leaked at some point between 1991 and now, and on top of that has corroded part of the audio filtering system, Chip U12, GARY (completely corroded the pins facing the battery) and I believe another connection or fuse or something in between U12 and the battery

However I don’t have a soldering iron so I can’t remove these as far as I’m aware, nor do I know what these chips do. GARY is next to PAULA which I assume means it’s some sort of expansion to the original A1000 audio chip??

If anyone can help that would be amazing, I’d love to get this thing working again for preservations sake, but also to learn the system and make some games for it

⟐ Answer edited July 11, 2025 at 14:20 MST

Commodore 64: What port do I use to connect my Commodore 64 joystick?

Fri, 11 Jul 2025 13:58:32 -0700

I have a joystick for my Commodore 64, but I don't know which port it connects to.

⟐ Commented July 11, 2025 at 13:58 MST

Commodore 64: Can I use a floppy disk with the C64?

Tue, 07 May 2024 01:42:48 -0700

I have a 5.25 inch floppy disk, is this compatible with the Commodore 64?

⟐ Answer accepted May 07, 2024 at 1:42 MST

Commodore 64: What differences are there between the C64 and C64 Personal Computer?

Wed, 07 Dec 2022 18:13:51 -0700

I have a "Commodore 64" with a 5 pin video connector, (serial # begins with P0) and a "Commodore 64 Personal Computer" with an 8 pin video connector (Serial # begins with CA). I have both a Commodore 1701 and a 1702 monitor, yet I cannot get the one marked "Personal Computer" to display properly. (The screen appears jumbled) The plain 64 displays on both units, although the color is not always there.

Do I have a bad "Personal Computer" or could there be other reasons why this unit will not display correctly?

IN addition, just what is the difference between these 2 different models? I don't seem to be able to find anything that relates to it.

Thanks,

Bill Machacek

⟐ Answered December 07, 2022 at 18:13 MST

Commodore 64: Is it possible to connect the C64 to a flat screen TV?

Sun, 17 Jul 2022 05:20:01 -0700

I have a C64 and I want to connect it to my flats screen TV. My TV has composite jack.

⟐ Answer deleted July 17, 2022 at 5:20 MST

Commodore Desktop: black/white picture. No color

Wed, 12 Dec 2018 21:54:01 -0700

What chip controls the color. I'm getting a black and white picture. I have a 1984 INTL COMMODORE 64 ASSY NO. 250425.

⟐ Answered December 12, 2018 at 21:54 MST