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From: sra@idx.com
Newsgroups: comp.sys.ibm.pc.hardware
Subject: Bad/Good news re STB Powergraph VGA
Message-ID: <1991Apr12.085426.2254@idx.com>
Date: 12 Apr 91 13:54:26 GMT
Organization: IDX Corporation, S. Burlington, VT
Lines: 17

After much discussion with STB, it seems they inadvertently released a batch
of STB PowerGraph boards with "out-of-spec" Tseng 4000 chips on them. 
Attributes include (1) taking a long time to change modes, and (2) sometimes
not controlling analog output enough (which causes good monitor with
overvoltage crowbars to let loose).  Additionally, VIDSPEED gives performance
about 1/2 normal (25 Mhz 386 gives 1220 +/-, should be about 3000?)

You can tell if the board says "Rev B" and the Tseng chip has a BLACK letter
"A" or "B" on it.  There may also be problems on "Rev C" boards.

Good news:  call them and they'll arrange a board swap at no cost..

	steve

  /------------------------------------------------------------------------\
  >   Steve Alpert (W1GGN)  IDX Corporation    Marlborough, Massachusetts  <
  \--------------------------- sra @ idx.com ------------------------------/