Commodore.ca: The PET, VIC, 128, 64 & More Forum

Got a c64 breadbox style from fleabay as untested. pluged it all in to find out it was booting up to a black screen, if rapidly turnd on and off it comes up with one color or flashes so iv identified the problem to be the pla chip.

As far as i know they stoped making these chips over 10 years ago, so was just wondering dose any one know how to repair/replace the chip in question and where about on the c64 mobo is it?

sorry newbie here

gammae101 wrote:...so was just wondering dose any one know how to repair/replace the chip in question...

Modern replacements for the PLA chip are available from Ray Carlsen here in the U.S. and from Francois Leveille in Canada.

...and where about on the c64 mobo is it?

Look for its number, 906114-01 or 906114, on the board. On an older brown C64, it's to the right of the 6510 CPU.

Truly,

thanks for the info shall take a look and get back to you. dose not realy matter where about the chip comes from as still needs come over sea's to the uk. Thank you very much for the replay

just looking at http://personalpages.tds.net/~rcarlsen/ but cant find any where on there where he sell the chip?? help please?
also will i be able to remove old chip place new one in and a way we go or dose anything need be done?

gammae101 wrote:just looking at http://personalpages.tds.net/~rcarlsen/ but cant find any where on there where he sell the chip??

You have to send him a private message at rcarlsen(at)tds.net

also will i be able to remove old chip place new one in and a way we go or dose anything need be done?

After any desoldering of the old chip and installation of a socket, you just put in the new replacement chip, and away you go. Nothing else has to be done.

Unless there is something else wrong with the board,
Robert Bernardo
Fresno Commodore User Group
http://videocam.net.au/fcug
The Other Group of Amigoids
http://www.calweb.com/~rabel1/
Southern California Commodore & Amiga Network
http://www.sccaners.org

Thanks for all your help finaly found a replacment one not orignal but should work was googleing as you do. Found some chap on ebayfrom germany who sold a few in the past as google lead me to one which alread ended sent him a message and he has some more he willing to sell, Just for 11 Euros including postage to the uk so just under £10 so not to bad
any road this is the link
http://cgi.ebay.co.uk/ws/eBayISAPI.dll? ... 643wt_1165
Ill let you know how it goes when i get it. and again thanks for your help

gammae101 wrote:...he has some more he willing to sell, Just for 11 Euros including postage to the uk so just under £10 so not to bad

Heh, Francois Leveille in Canada sells them for $8 Canadian (not including postage) which is 5.17 pounds UK.

Truly,
Robert Bernardo
Fresno Commodore User Group
http://videocam.net.au/fcug
The Other Group of Amigoids
http://www.calweb.com/~rabel1/
Southern California Commodore & Amiga Network
http://www.sccaners.org