help tuning monitor

[janey6152]

i got a old  R Type arcade  and i tried playing with all the tune buttons on monitor and i can't get the screen to open up.
anyone  can tll me which button i need to turn an adjust pic screen ..   or maybe i need a new monitor ..

[Kevin Mullins]

There isn't any way to open that up......

You have a horizontal collapse, the monitor needs repaired.
A capacitor kit and a good check of the transistors should fix it.

Does that cabinet have the Sanyo 20EZ in it?
Is it the original Black Nintendo cabinet? (those are cool)

[grantspain]

its quite rare to see a horizontal collapse,if you are really lucky it will be a bad solder joint on the chassis.
otherwise its gonna be like kevin said

[janey6152]

can you help me as too what exactly  what i need to do ? I wanna learn.
I have a 24 - range digital multimeter , the only thing i know about it is using it for battery testing...
 where do i get the capacitor kit ? and how do i test the transistors??

thanks  everyone..


PS  I did for a secound saw the full screen and when i hit the force button it went to state  its at now . i heard some
sound,  like click, and fuzz out .

[grantspain]

bad solder joint bud,you need to remove the monitor board and check for the bad solder joint-my guess it will be on the yoke connector or the flyback transformer
if you have no soldering skills get a local tv tech in to check it out

[janey6152]

I love to solder....   So that the end of the tube That has a borad on it.. ??
 I'll pull it out ( OFF) and insert it in maybe it got loose from transporting it...

[Zebidee]

I love to solder....   So that the end of the tube That has a borad on it.. ??
 I'll pull it out ( OFF) and insert it in maybe it got loose from transporting it...

Please don't get killed - I am very worried that you don't know what you are doing, especially as a jnr member.  Monitors hold very high voltages even after turned off and removed from the power supply.  Most arcade monitor techs seem to suffer accidental electrocution at some time in their careers, and they are trained professionals!  Whatever electrical adventures you begin, make sure that you really know what you are dong first.

Make sure that you read the stickied Monitor FAQ and learn about monitor dangers, and especially how to safely discharge a monitor (with someone else around, preferably an adult, to call the hospital if you stuff up and get zapped)!

[grantspain]

hell yeah,if you don't know what you're doing get a pro in.
like zebidee said there are some nasty voltages on monitors,i got a 20000 volt shock a few years back and its not nice,i work on them all the time.

[janey6152]

I hear that..... Yes i'm aware of the voltage.. I guess i'm better off taking out the cabinet and finding someone local who can fix it then ...


 Anyone knows i place here in NYC , OR PA Near Poconos area ?




janet

[qrz]

rules for working around high voltage.

use ONE hand. pay attention to work at hand - use caution . when in doubt - ASK someone with experience.

fyi, when i started in electronics , "real " radios glowed in the dark , and had that sweet smell of ozone ......

"there are bold technicians, and there are old technicians. but, there are very few old bold technicians"

qrz

[grantspain]

rules for working around high voltage.

use ONE hand. pay attention to work at hand - use caution . when in doubt - ASK someone with experience.

fyi, when i started in electronics , "real " radios glowed in the dark , and had that sweet smell of ozone ......

"there are bold technicians, and there are old technicians. but, there are very few old bold technicians"

qrz

i'm old and bald,does that count

[Zebidee]

i'm old and bald,does that count

Yes - you must be bolder because you are less scared of hair-raising experiences!

Janet, we just want to keep you around!  We look after each other and all that.

Like many here, I love electronics because I can learn new stuff every day and push my limits & capabilities further.  But you have to know exactly what your limits currently are, and stay within them, which can be hard for the enthusiastic enthusiast.  Just be ultra-careful always, know what you are doing before you do it, ask lots of dumb questions and have someone around who can help if you really need it. 

You should probably discharge the monitor before removing it anyway.  This is a scary thing to do, but is perfectly safe if done properly.  But once you have done it it is empowering - and makes the monitor a lot safer to handle.

With your monitor problem, I'd guess that you don't need to remove the entire tube as well - you could probably get away with just taking the chassis to your tech person.  Depends on how easy it is to move as a unit, I guess.

[janey6152]

Thank you everyone for the great Info and support, and concern/ and CARE...

I'm kinda of scared of dischargeing the monitor . Sounds to scary. But yet a challenge...

Ps Can i remove the neck board , with out dischargeing the monitor ?

[Kevin Mullins]

Ps Can i remove the neck board , with out dischargeing the monitor ?

Yes

[Zebidee]

I reckon that you should discharge the monitor regardless for that kind of job (ie anything involving playing with the tube or chassis) - it is simple to do, and saves you worrying too much about touching something accidentally.  Also, as I mentioned, it is empowering.  Once you do it properly once, you won't be scared of it anymore (but still respectful of potential danger, we hope).

Here is a link to the Monitor FAQ on this forum (which we all should read), which discusses discharging:

http://forum.arcadecontrols.com/index.php?topic=45137.0;all

Here is a direct link to the step-by-step Powerpoint presentation:

http://www.arcadegames.net/sightsound/discharge.ppt

Do it with a responsible person (this usually means adult) around, at least until you are sure what you are doing.

[Kevin Mullins]

A coule more to give you an idea of the process as well.
The second one uses a High Voltage probe....personally I have never used one.

http://www.instantarcade.com/discharge.php

http://www.stickycarpet.com/pinx/md.html

[janey6152]

thanks