A1200 CIA timer failure

Towersen2 December 2020 00:33

Hello, im the same problem with my Commodore Amiga Escom 1200 and thanks to you, now i know what is that i need to do to repair it. Thanks you very much my friend!

TSB10 May 2021 14:40
You’re welcome!

TSB17 December 2020 20:27

That’s why I share this information, to help other people. 🙂

dario9 January 2021 22:57

I have the same problem, Amiga test kit shows the same error, but on DiagROM it passes all test OK. Machine seems to work fine though. What did you use to desolder the IC and solder the PLCC socket. Thanks!

TSB11 January 2021 13:30
Hmmm that’s strange, I don’t know if the DiagROM will pass/fail this, did not try that. My suggestion is to get the last Amiga Test Kit ADF and the same for DiagROM. before you start to remove the CIA.
What I use:
– Hotair station to desolder the CIA
– Kapton tape (the yellow(ish) tape) to protect the plastics and small parts from the heat
– To solder the socket I use a normal tip and solder it pin for pin

AXEL9 May 2021 16:06

Hi, my A1200 returns with the same problem but on CIAB, but seems to work correctly…mouse, floppy (DF0 and DF1), keyboard and joysticks works correctly.
I do not have the Diagrom to test, but do you thinks should be a “false negative” ?

Many thanks

TSB10 May 2021 14:42
You also tested it with the Amiga Test Kit (ATK)(Systest)?
I don’t know if it’s a false negative, you could reachout to Keir Fraser, who wrote the ATK..

Martin Samuelsson4 June 2021 15:39

I just wanna chime in and say that I had this exact error, floppy drive wouldn’t work at all, replaced the CIA and it’s fine again.

TSB8 June 2021 16:25
Nice! That’s why I share information like this 🙂

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