IBM 8512 VGA Monitor, 12"

IBM's first generation VGA display released with the IBM PS/2 computer line.

Known Issues
As a first generation VGA monitor, the 8500 series has its shortcomings. A dot pitch of 0.41 makes the display fuzzy and monitor dims noticeably when drawing light-colored screens, though this is not generally a sign of failing components. There are several known maintenance issues which are detailed in the link.

Causes

 * Failed power supply, monitor would intermittently turn pink.

Solutions

 * Replace capacitors throughout power supply, main PCB, and neck board. Inspect carbon film resistors in area of flyback transformer for burn marks / shell damage

Disassembly Notes
When replacing caps located under the EMF shielding, be careful to note capacitor heights for the taller capacitors.

Basic PCB Name
SN9979800001 rev. 04 and 08

''NOTE: All capacitors listed below are through hole mounted aluminum electrolytics. All capacitances are micro Farads (uF).''

* C620 is not present on rev. 08

** C557 is notpresent on rev. 04

Basic PCB Name
If parts are not available or different selection is preferred, you can use the values in the Original Parts section to perform a parametric search.

Kits

 * Digikey BOM: https://www.digikey.com/

Related Links

 * IBM 8512, 8513, and 8514 maintenance and repair notes on repairfaq.org