arcade monitor

[kingau]

Hi I'm new here,

and I want to replace my 25'' monitor.

what's the best arcade monitor for and upright neo geo cab.



thanks

 

[Dion]

What's wrong with the old one?

 

[kingau]

every thing works but the moitor
just won't work any more.

so I'm thinking of buying a new one,
and start fresh.

 

[Heinz]

You might be able to fix the current monitor and save yourself a good chunk of cash. Describe the problems with the display and maybe someone here can help you out. Lets troubleshoot first? You might learn something on the way.

 

[channelmaniac]

Arcade monitors are designed to be serviced, not thrown away.

Many times you can bring one back to life with a simple capacitor kit and resoldering of cracked solder joints on all the connectors and high voltage transformer (a.k.a. flyback transformer.)

Some models like to smoke their flyback transformers... if that's the case then you'll need to replace an additional transistor, the flyback, and maybe a fuse.

It's not difficult to do.

First things first though. Look for a fuse in the bottom of the cabinet for the monitor and see if it's blown. Next look for a fuse on the chassis of the monitor and see if it's blown. Sometimes fuses just blow because of age and heat stress from years of use.

RJ

 

[Hewitson]

Makes me cringe whenever I think about how many idiots have thrown out good electrical equipment because of something as simple as a fuse.

 

[kingau]

I really don't want to be one of those idiots!!!
if I can fix it and save this monitor and save money.... that be the best.

I'm a new at this so I apologies up front.
what dose the fuse look like and and how do I know it blown.

the monitor has no power but every thing is eles is pluged in.

 

[Hewitson]

No need to apologise mate, we've all got to start off somewhere

If the wire inside the fuse is broken, it's blown. There should be at least one on the monitor chassis (main board) and there may well be an in line fuse located somewhere in between the chassis and the isolation transformer. If there is it will be inside a white tube with wires either end of it.

Be careful working on monitors. They can hold a big charge that is very dangerous.

 

[Heinz]

Makes me cringe whenever I think about how many idiots have thrown out good electrical equipment because of something as simple as a fuse.

Like the idiot who threw out a perfectly fine Loewe CRT! Works like a charm.

On topic, if you're going to poke your fingers around and disconnect things then please discharge the monitor beforehand. Nasty shock otherwise.

 

[kingau]

thanks.
I'm going to try it, will post pic of the progess.

The monitor is a Zenith G-A63ADG25X 04RC0105-009.
now I'm going to discharge the monitor,
and start to look for the fuse.

 

[Dion]

That's not the monitor model. That's the tube number. Post pics of the chassis and we'll tell you what it is.

 

[kingau]

here are the pic's

here's another pic from the left side the yellow fuse cap is not on this pic.

I did change the fuse on the the side of the chassis but still no power to the monitor.

 

[kingau]

I took out the monitor,
found it had to fuses one was a 250 1A and the other was a 250 4A (4A was blown).

I replace the 1A and the 4A

and every time I look at the 4A fuse it gets burn out,

the 4A is under the monitor.

the 1A is fine but the 4A is toast.

I used a different fuse to see if I need a stronger one, a 4A 250v time delay fuse.
and the monitor was on and then it went off.
I look at the 4a fuse and that one was burnout to.

I got the fuses at home depot.

is there a special fuse that I have to get?

thanks

 

[Dion]

If your fuse is blowing there is a reason for it. Is it a fuse on the monitor that is blowing? If so you definitely have a component failure on you monitor chassis. Can you take some better pictures of the monitor electronics? Don't need pics of the tube.

 

[kingau]

is this the monitor electronics?

the tube works cus it did lite up but then go's off and I end up with a blown fuse.

 

[Dion]

No. The main monitor electronics. That's just the neckboard. The bigger pcb is what I need pics of.

 

[jew90]

He wants some better pictures of this board.

 

[kingau]

Thanks,
Will do as soon as
I get home from work .

 

[Dion]

Looks like this one:

http://arcadecontrols.com/BBBB/am.html

Never seen one let alone worked on one. Could be hard to find parts.

Is that something oozing from the top of the flyback? Look for cracks on the flyback. If its bad you might just want to get a replacement chassis.

 

[kingau]

the flyback looks fine nothing is oozing.

 

[FA-MAS]

No one's asked yet if you see glowing in the neck or if you hear high voltage whine or "static" noise from the monitor.

 

[kingau]

yes I do,

I hear it but then the fuse blows out.

so I know it works but it keep blowing the fuse under the monitor.

here are som pic of the borad.

 

[channelmaniac]

In the last pic the yoke connector is unplugged.

Plug it back in!

 

[kingau]

again I apologize

I'm a real novice at this.

is this the part that I need to pulg in ?

it was pulg on the board like this when I got it.

is this why I keep getting a blonw fuse?

 

[Dion]

No. It looked unplugged but its just plugged into a different yoke connector. Some monitors have two.

Edit: Just for the hell of it unplug the wires that say D Coil and try firing it up again. If the fuse doesn't blow then that means the degaussing coil is shorting. If it does blow again it's probably a shorted HOT (horizontal output transistor), Diode bridge, or bad flyback. Are there any obviously burnt parts that you can see?