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VGA Related Problems
 
If there is no VGA output, then check the following:-
  • Make sure the VGA lead from the monitor is tightly secured to VGA output from the desk
  • Open the desk and press on the VGA card to ensure it's sitting firmly in its socket.
  • If the above fails, there are a few hardware checks to do.

VGA Section on a  Borris I
Click here to see a picture of Borris I

  1. Check orientation of diode (D251).
  2. Check there is a wire link between pins 1 & 3 on IC257 (74HCT04)  - Part Number : 05-03-0505
  3. Check or replace these ICs :-
    IC253 & IC255 (SN74LS245) -     Part Number : 05-03-0015 
    IC252 (SN74LS374)            -     Part Number : 05-03-0019 
  4. Check the 31-way edge connector is glued firmly to the main motherboard.
  5. Check or replace the Victor Gal.

VGA Section on a  Borris II
Click here to see a picture of Borris II

  1. Check or replace these ICs :-
    IC503 & IC504 (SN74LS245) -     Part Number : 05-03-0015 
    IC508 (SN74LS374)            -     Part Number : 05-03-0019 
  2. Check or replace the VIC Gal.
If the fault still remains the VGA card may need replacing

Borris I motherboards can now use both old and new generation VGA cards.
A special software version is now available from our download section.
The software is called :- 
Pearl 2000 Borris 1 (algVDU card) - 9th October 2000
Please contact an Avolites representative before installing this software. 

Borris II motherboards can use both old and new generation VGA cards. The latest version of the software must be used and a slight modification made to the metalwork on the output panel to allow the VGA card to sit securely in place.
Some of the earlier BORRIS I motherboards did not include the facility to run a VGA monitor on the desk so an upgrade kit may be required.
The console will have to be sent to Avolites for the upgrade - quote Part Number 8002-3000.
 

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