Re: Tempest - Q705 or Q706?

Hi Ian
If you take both of them out and stick them in the post to me, I will check
them and send you workings ones if you cover postage. I'm sure I have some
spares here.
Cheers
----- Original Message -----
From: "Ian Boffin" <ian@vaxxian.net>
To: <vectorlist@vectorlist.org>
Sent: Monday, December 04, 2006 8:12 AM
Subject: VECTOR: Tempest - Q705 or Q706?

> Hi,
>
> I'm looking after a friend's Tempest cocktail, which came to me in a
> non-working state. I appear to have fixed all the gameboard issues and
> it plays blind, but I'm not getting any X deflection on the WG-6100.
>
> I've swapped a last known working deflection board into the monitor and
> it immediately blew fuse F700. I replaced the fuse and swapped round the
> connectors so that Q605 and Q606 were driving the X deflection. Sure
> enough I now had X deflection, so I've deduced that either Q705 or Q706
> are the problem.
>
> As you've probably gathered, I'm no expert on monitor repairs. I can
> just about read most of the schematics and use a bit of swapping
> component logic to isolate problems. That's as far as my ability goes.
>
> Is there any way of telling, without access to decent metering equipment
> I don't have, whether the 2N3716 (Q705) or 2N3793 (Q706) are the problem?
> Also is there a decent source for these two parts in the UK?
>
> Cheers
> Ian
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>

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Received on Mon Dec 4 04:30:40 2006