Sega Turbo vertical deflection problem

[Guest]

Archived from groups: rec.games.video.arcade.collecting (More info?)

Okay, this is the second MC2000S monitor I've worked on out of a Turbo
with the same problem (and same results). I have no vertical
deflection. The transistors check good and so does R416 @22ohm. I
assume you test a fusible resistor the same way you do any resistor.

I've installed a cap kit and tested every component in the vertical
deflection portion of the chassis. (That is rather easy as it is
surrounded by dashed lines) I've resoldered suspect cold solder joints
on the chassis but have not done all 2000 of them.

Is there something that is a typical failure in this monitor that I
should look for besides the items listed above? I'd really like to get
both of these monitors working.

I see startech journal has a note about deflection problems with this
monitor but I have no subscription to them. If anyone could check their
archives, I would appreciate it.

When I find the item that is causing the problem, I will post the
results here for future reference.

Thanks

Pat D.

 

[Guest]

Archived from groups: rec.games.video.arcade.collecting (More info?)

Pat,

If you have a thin line running horozontal across the screen, you
actually have a horozontal deflection problem. As you have to consider
the monitor lying horozontally when making the determination which
deflection is out. If you lay it horozontally the thin line is actually
vertical thus you have vertical deflection. You are missing horozontal
deflection.

Use the schematic you have (assuming, in the turbo manual) and start
looking in those areas.

- Matt

 

[Guest]

Archived from groups: rec.games.video.arcade.collecting (More info?)

Nope, the monitor is a vertical mount monitor and the line runs
lengthwise from top to bottom, that is across the widest part of the
screen so that is a Vertical deflection problem. ( Unless of course I
have lost my mind from drinking too many beers this past weekend.)

If I am wrong, somebody please correct me so I can get comeone to kick
me in the *ss.

Thanks

Pat D.


Matty-t wrote:
> Pat,
>
> If you have a thin line running horozontal across the screen, you
> actually have a horozontal deflection problem. As you have to consider
> the monitor lying horozontally when making the determination which
> deflection is out. If you lay it horozontally the thin line is actually
> vertical thus you have vertical deflection. You are missing horozontal
> deflection.
>
> Use the schematic you have (assuming, in the turbo manual) and start
> looking in those areas.
>
> - Matt
>

 

[Guest]

Archived from groups: rec.games.video.arcade.collecting (More info?)

Bad yoke? B+ too high causing collapse for X-Ray protect? (Dunno if that
monitor does that or not.)

"Pat D" <patdanis@comcast.net> wrote in message
news:lNednRpdQqUnHD7fRVn-jw@comcast.com...

> I've installed a cap kit and tested every component in the vertical
> deflection portion of the chassis.