Hallo Donni, grappig dat wij via Canada over dit geval zitten te mailen, maar het lijkt mij beter om in Engels verder te gaan zodat iedereen er iets aan heeft, en bedankt voor je input :-) Hi Donni, ok, this is clear about the numbers on the RAMs.... Am i correct when you talk about the video RAMs ...

H Donni, thank you for your reply and the mention of the RAMs on Ebay, i will sure try. What i do not understand is that it makes a differents when i swap a 6550-2778 with a 6550-1978 RAM, i will get a higher or lower free mem amount. And i see 4 different 6550-**** on the banks ! (also on my other ...

Hello, can someone please tell me the correct configuration for the 2001-8 1977 memory banks setup or link me to a site that has this configuration setup ? It seems that when i swop just one RAM i get a lower or higher amount of free memory. I want to get the standard 7167 but when i swop with an ...

Hello, can someone please help me to repair 4 mainboards ? Have 2x 2001 , one 4032 and one 4016 mainboards. The 2001 boards do start-up but show just numbers on the screen, the 4032 shows a second numbers the vertical lines, and the 4016 is dead... I am willing to pay for the repair and cover the ...

Hello, i have a 64K epansion card but can not see how to connect this to a 2001 - 4032 or 8032. Have only the (new) card and one flat cable. On the card itself are also the wired connectors, one with 7 holes 2 closed, and one with 7 holes 1 closed. Think these 2 connectors go on the two 7 pins on ...

Hmm. I'm confused. Sorry, but you're really not being clear enough regarding the symptoms. Some of my questions were intended to see if the computer was actually working, and it's still not clear. 40 straight vertical lines on a working computer suggest either a bad character generator - or even a ...

Hi j1mt3hcop13rwr3nch,

Sorry i am not clear, english is difficult to make electric issues clear, but i will have a new try this week.....

Hi j1mt3hcop13rwr3nch, Her my answers: Are the "numbers" properly formed, centered, and look about like they should for a PET warm start? A) No random 2) Look closely to see if the vertical lines run right through the characters. Do they? A) No, the characters stay for one sec. then the lines. Are ...

Some holders spring load the fuse against a bayonnet cap and can be tricky to "jam", others with slot screw caps are easier - been known to wrap a few turns of dryer tape around the outer end of the fuse to interference fit it, but neither are solutions. Best to find another holder in the long run ...

1) Are the "numbers" properly formed, centered, and look about like they should for a PET warm start? 2) Look closely to see if the vertical lines run right through the characters. Do they? Are they perfectly vertical and straight without overscanning to the edges of the bezel? 3) Does typing ...

Hello, replaced the missing C25 by a new one and direct a different image on the 9" screen.
Again for one second a screen full of numbers, and then bright vertical static lines.
Will someone have any idea what is wrong ??
Thanks for any imput.......

Interesting weekend. been pulling my hair out trying to bring a pair of 2001 boards back to life. One suspected bad main ram, the other the 74244 bus buffers on the CPU address bus or the 74154 rom select mux. 6 hours later the culprit on the latter was pin 18 on one of the rom sockets. it looks ...

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Hello, i need to solder a new capacitor on the C25 spot.
What will the + and - side be for the C25 ?
This is a 4032 CBM mainboard.....

Thanks,
Dick

Hello, i need to solder a new capacitor on the C25 spot. Never did this so is there a specific + and - side on the capacitor, and where is the C25 + and - on the mainboard ? Also will it be a problem if the new C25 have 68v instade of 50v ? And the store is talking about an Elco, not capacitor, is ...

I would check Jameco electronics. http://www.jameco.com/ For a fuse cap I doubt it would be anything commodore specific, and used a standard fuse type you will find at Jameco. HI, thank you for your reply, but i tried some fuse caps from other PET models and they do not fit !!! Is there any other ...