g05 v2000 spot killer problems

From: James G Watt <kinetic-arts_at_ntlworld.com>
Date: Wed Aug 21 2002 - 10:24:19 EDT

I've got 2 monitors both with malfunctioning spot killers. It was
sugested to me that I replace all the transistors in the spotkiller
circuit to get rid of the problem. Having some trouble finding the
transistors though.

G05 Spot Killer. This spot killer activates continually. When I disable
the circuit the monitor works perfectly:

Q500 (NPN) TPS 98 NTE194 is this right? (2SC2240) RS: 197-9828
Q501 (NPN) TPS 98 NTE194 --
Q502 (PNP) 2n3906 NTE159 RS: 294-328
Q503 (NPN) MPSU03 2SA1306B ??
Q504 (NPN) MPSU03 2SC3298B ??

V2000 Spot Killer. This spot killer appears to work correctly except it
is to sensitive. When playing asteroids everything's fine until you get
to the last asteroid. When the screen is empty like that the spotkiller
starts to activate intermittently.

Q500 (NPN) TPS 98 NTE194 --
Q501 (NPN) TPS 98 NTE194 --
Q502 (PNP) MPSA56 NTE159 is this right? (2n3906) RS: 294-328
Q503 (NPN) 2N3904 NTE194 RS: 294-312
Q504 (NPN) D40P3 2N6558 ??

Having real trouble finding equivalents I can buy at RS
(http://www.rswww.com/). Can anyone help
fill in the blanks?

---
James G Watt
http://www.kinetic-arts.co.uk
Part of the Video Arcade Game Collectors WebRing.
You are in a maze of twisty little passages, all alike.
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Received on Wed Aug 21 07:51:46 2002

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