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C64 / COMMODORE [Stationary computer]

The EURAS repair tip database for professional technicians and service engineers supplies the following faults for C64 / COMMODORE.

List of fault symptoms:
  • Does not function correctly when run is pressed.
  • In PB noise bar running down screen.
  • Blank raster but no output from computer other than modulator.
  • Power up with Commodore screen ok but letters quickly change colour then appliance cuts out.
  • Blocked manual functions.
  • Computer dead after trying to fit power supply plug into rear sockets. (C64 COMMODORE repair tip)
  • Does not initialise - screen is black.
  • Defective external power supply. (C64 tip from COMMODORE)
  • Appliance locks up - rubbish on the screen. At start up no functions except a blank synchronised raster. Sometimes lock up after 30-60 mins, displaying whatever on screen with characters at random.
  • No reaction from keyboard commands. (COMMODORE - C64 information)
  • One or more audio channels do not function.

Tips are coming from EURAS customers, workshops and payed technicians from all over the world. COMMODORE C64 fails can be better solved.

If COMMODORE C64 fails, this information will help you. Here you can only see the symptom list, to access remedies, you must register.

With help of this list a solution is found often when COMMODORE C64 fails.


Additionally to repairtips or service information C64 is linked to 23 components (IC's and/or transformers) in the Tectra database, through which you can identify electrical compatibilities (crossreferences) in appliances.


Do you want to see this remedies/cures for repairtips?   Register here for the EURAS System
Please note: access to the EURAS System can be granted only to professional technicians/TV/Video/household electronics repair shops which are authorized for service by a manufacturer, or can prove to be professionally certified to do repairs on electronic appliances. You will be asked for a statement and information accordingly during registration.

If you do not qualify as stated above and you have an appliance that needs technical service, we do recommend you to contact the manufacturer (for example through his website) or go to a professional household/TV/Video electronics repair shop close to you.

Already registered? open C64 COMMODORE in EURAS

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Last updated: 16. Oct 2008 05:14:05 MET, doccode ISO9002AS168EKA200805C EURASMOP

Responsible for the content: EURAS International GmbH, Eime, Germany.
All brand- or productnames are copyrighted by the respective manufacturer of the appliance and are only being used for identification purposes.