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Arcade Repair Tips – More Troubleshooting Monitors With Michael (Part One)


Tim: Hi, welcome back to the Arcade Repair
Tips Video Series. We’re here in Sulpher Springs, TX, at Affordable Electronics to talk to Michael
about some monitors. How are you doing Mike? Michael: Good, how are you Tim? Tim: Doing fine. You know, we get a lot of
questions about monitors. Probably the #1 thing people are always asking is how do you
check for monitors or how do you know – mine’s giving a double image or we got this. So we
wanted to bring a monitor in here today and we wanted to talk to Michael some more in
depth about it. As you can see I brought this touch screen
monitor out of a game that we have and it’s got a lot of lines here on the top. Now if
I was to call you, Michael, and I was to say these lines are running all across the top
of my screen, what would you say if we were just talking on the phone? Michael: Well I’d ask you which way they were
running. A lot of people have a misconception that if they’re running horizontally you have
a horizontal problem. That’s not so. It’s actually in the vertical section, you have
a vertical problem. Your vertical is breaking down before it reaches full screen. Tim: Is this a horizontal or a vertical monitor?
I know some monitors, like we take them out of a Pac Man game and put them in a Defender.
But it’s either one of the other, right? How do you know? Michael: All monitors are the same. It’s just
how you display the image on it. You look at the anode, the tube where the voltage goes
through. That’s going to be at the top of every monitor. From the top to the bottom,
it’s going to be vertical. If you have a sideways game that has a vertical problem, the lines
are going to run up and down one of the sides. Tim: So even though the lines here, I hope
you guys can see this real good. This is a very common question that we get. Lines across
the top of the monitor, even though they’re running horizontal you think this is a vertical
problem. Michael: That’s correct, it’s a vertical problem.
If you had a horizontal problem, the lines would vertical because the picture expands
from the center, horizontal and vertical. Tim: Well that’s very interesting to know.
I appreciate you explaining that even further. So we’re looking at this and I see these lines
and I know that all the time we tell people that it’s probably a capacitor. Lets talk
about capacitors for a minute. What do they do and why do they fail? Is there something
we can do to prevent them from failing or do they just fail? Michael: In some things the capacitor is going
to fail no matter what. The main issue with capacitors is heat. The heat causes them to
dry up so they’ll break down and fail. Tim: That’s one thing we talked about in an
earlier video was about fans in a game and how that modern day games have a lot of fans.
But in old school classic games, hardly any of them have fans. So you have a lot of heat.
Plus we’re putting something that normally is open and everything inside of a really
hot box, basically. Thick wood. Plus they get dirty so people should clean their games.
Get the dust out of them. Dust is like an insulator. Michael: It’s like a big blanket on top of
all the components. Tim: I know a lot of people will wrap their
Xbox in a towel or something to get the solder hot. Well, if you’re not dusting your games
and it’s not clean, that’s essentually kind of what you’re doing. So we think that this is a capacitor issue.
We know a few things that it’s not. For one thing, we know that the flyback is good of
course because we’ve got a picture, right? We know the hot is good, otherwise we wouldn’t
have any picture. There are several things that we can tell that are right. One of the things I’ve been trying to encourage
everybody is take the things you know. You may not be the best repair guy out there but
you know certain things. Do what you know. Also when we look at this we know what’s right. But there are a lot of capacitors back there.
Where would we get started? Michael: Well on a circuit board, first determine
where your vertical IC is. If you don’t have a schematic or any type of literature to figure
out where it is, usually you’ll follow your yoke leads to the circuit board. Your vertical is going to be a yellow or a
green sometimes. Your horizontal will be a blue and a red. They vary in colors but usually
that’s the rule of thumb. Vertical will usually have yellow somewhere in the combination. Follow the wires to the circuit board and
they usually go somewhere near the IC. Then that IC will have a location number. I don’t
see one on here. But they usually have one and those numbers
follow in that circuit. For instance if it’s IC600, then the components that deal with
that circuit will be C6-something, it will be in the 600s. Tim: Right. That’s one thing you taught me
before and I thought was an excellent thing. Because you look on the capacitors on the
back and you see C401, 407, 408. Then you’ll see right next to it C800 and I’m thinking
can people who make monitors not count? That’s why, because certain types of things are certain
numbered for a reason, right? So they know if you’re in that IC circuit all the caps,
if you’re hearing what he’s saying, all the caps in the vertical circuit are probably
going to have the same number, right? Michael: Correct, as the IC. The vertical
IC. Tim: The vertical IC. So if you can find the
vertical IC and you can find the vertical problem – in other words, a long time ago
when we used to do monitor repairs, we did the shotgun approach. What we did was we’d
get a cap kit from like Bob Roberts or somebody and we’d just repair all the caps. Now fortunately
that solved a lot of monitors issues because if you repair all the caps, then you know
it’s going to work. But the problem with that is that’s very time-consuming.
Now that we have say 15 monitors to work on, we don’t want to be spending an hour per monitor
if we can only spend 15 or 20 minutes. So if we know we’ve got a vertical problem we
can locate that vertical IC and those caps. We’re only going to replace the caps in that
area, right? Unless you see another issue or something. Now if you want to replace them all, it’s
like buying tires. You’ve got one tire that’s flat you might go and replace it. But then
you see the other three are looking that way, you might go and replace them all. Sometimes
that’s a good approach when you’ve got an older monitor, just to repair them all. But
a lot of times it’s just a waste of time and money in my opinion. Michael: If you have a problem and it’s just
one single cap, you can run down to local Radio Shack or wherever you know it’s sold
and get that one single cap and fix your problem. Without ordering anything and waiting for
it to come in and all that. You can get it up and going. Tim: If you send your monitor off for repairs.
It’s just like us, we have to take the time to take it out to do the cap kit or whatever.
We’re going to charge for that. What we charge the same price, a lot of times, for one or
two caps as we do for ten caps just for the time it takes to do it. So if you can find
that one cap or two caps and fix that you can save a lot of money. Well, come on in camera man. Lets do a little
in depth and we’ll start with seeing where this cap’s verticals are.

Bernard Jenkins

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