Re: Dr. Dude Players 3 and 4 out

If your game has the plastic standoffs, yes. Some
games have screws and/or nuts to hold the board on.
There is a special "tool" for this that is just a piece of
plastic tubing that does the same thing.

The "extra" leads on the replacement tube are not a
problem. They are made this way to fit several different
applications. You will be able to match them up to your
old tube before you install it. You can cut off the ones
you don't need after you are sure everything works okay,
too.

Pay close attention to the standoffs on the glass. One of
the most important things to do is get them in the proper
location on the new tube, and be sure the new display
lines up properly with your backglass BEFORE you solder
all the leads.

Proper removal of the old glass is important. (This is shown
incorrectly on videos I've seen...) First, CUT all of the leads
midway between the glass and the PCB before you remove
the glass and standoffs. After the old display tube is out of the
way, use your soldering iron to heat each lead until it is free, then
remove it. After all the old leads are out of the way, you can then
desolder all the holes.

When installing the new tube, allow enough 'slack' in the leads
to allow for expansion/contaction. A little "knee" bend will do
the trick. If you do not do this, the leads may pull out of the new
glass, and it too will die....

Leave the game on for a good day, (~8hrs), to burn in the new tube.

--
Fred
TX
CARGPB#8
******************


<flearl@xxxxxxx> wrote
> Hi Fred:
> I checked the 39k ohm resistors on the power supply, they
> show 36.5k and 39k each, the power supply is making like 96.5V and 101V
> on either side. I am not qualified to fool around with those other
> ic's, the tube has failed as you suggested, plain and simple. I think I
> can solder in a new one, do those bayonet looking standoffs that hold
> the display circuit board to the wooden back panel just pinch and the
> board releases? I am not familiar with that type of construction, if I
> can get the board loose from the wood door I can desolder and re-solder
> a new tube. Another thing that concerns me is that the replacement
> tubes appear to have more pins than mine has, not sure why, the part
> number I need is Bally 5670-12308-00 Display, 16 char, a/n.
>


.

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