Microsoft KB Archive/88547

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Seeing White Spots with Tandy 4825SX and 4850EP

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Q88547

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The information in this article applies to:


 * Microsoft Windows versions 3.1, 3.11

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SYMPTOMS
Tandy technical support has confirmed that you may see white spots on your display when you use Microsoft Windows 3.1 on a Tandy 4825SX and a 4850EP after you have upgraded the video memory.

CAUSE
This problem is caused by an incompatibility between some of the motherboards and the Intel 70 nanosecond video RAM chips. If, after upgrading the video memory, you see white dots on the screen in Windows 3.1, then look at the main logic board next to the CMOS battery. If the word &quot;WAVE&quot; and a up arrow are stamped on the motherboard, then the problem is probably with the video RAM upgrade chips. The video RAM chips that produce the error are Intel 70 nanosecond chips.

RESOLUTION
These Intel 70 nanosecond chips should be replaced with either Intel 60 nanosecond or Micron 70 nanosecond chips.

To correct this problem, contact Tandy technical support for replacement video RAM chips.

MORE INFORMATION
For additional information, contact Tandy technical support.

The products included here are manufactured by vendors independent of Microsoft; we make no warranty, implied or otherwise, regarding these products' performance or reliability.

Additional query words: 3.10 3.11 Radio Shack super spots specs 3rdparty

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Issue type :

Technology : kbWin3xSearch kbWin310 kbWin311