Re: Tempest WG6100 Blows F700

FYI... Fixed... R707 (390ohm) was open.

Kirk S.
----- Original Message -----
From: "Kirk Spradling" <kspradling@kc.rr.com>
To: <vectorlist@vectorlist.org>
Sent: Wednesday, October 10, 2012 6:38 PM
Subject: Tempest WG6100 Blows F700

>I was experiencing random garbage on my Tempest so I pulled the boards out,
>removed the solder from the interboard connectors and resoldered them. I
>put the board back into the machine and F700 blows instantly. I have
>replaced ALL Q70x series including the chassis mounted transistors and it
>still blows F700. I have disconnected the edge connectors from the game
>board and it blows F700. I connected my Oscope to the game board X/Y and
>it displays the game and test screens perfectly with the same scale in X
>and Y. LV2000 installed years ago. Transistors all test good and no shorts
>to chassis. First version of the deflection board with no imput protection
>installed. Spot killer lit.
>
> I'm pretty sure that it is related to the game board repair however I am
> at a loss as to what is going on since it blows without the game board.
>
> The 6100 Faq doesn't mention much about blowing the deflection fuses. I
> guess I should start taking some measurements on the deflection board
> itself to see where I am getting the full-on signal. Pull the X amplifier
> connector and check some readings. I guess I had better look at the
> schematic again.
>
> The diodes test ok as well. Guess I will start on the resistors.
>
> Thanks in advance...
>
> Kirk S.

---------------------------------------------------------------------------
** Unsubscribe, subscribe, or view the archives at http://www.vectorlist.org
** Please direct other questions, comments, or problems to chris@westnet.com
Received on Mon Oct 15 19:37:55 2012