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Author Topic: problems with two different monitors  (Read 1809 times)

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minniescar

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problems with two different monitors
« on: January 04, 2007, 02:12:46 pm »
 Ive been doing cap kits on all my old monitors and trying to tweak them for a better look and two of them are causeing me some headaches. The first is a 19 inch wells gardner k4900 series that i just cant seem to get the colors right no matter what i do. The screen has a pink overcast to it with a slight blue haze to it. Its in a enduro racer cabiniet and to give you an idea how off it is color wise the game should have a green background on intro instead its the same color as   
the defualt blue color sheme of this forum. Its allmost like the monitor is coming out of a deguasing or needs to be degaused but this model auto deguases everytime its turned on from what ive read.  Ive litterally spent hours trying to adjust it with no luck on getting any better so im wondering is it possible its a component thats failed versus being out of adjustment?

 The other monitor with problems is due to my screw up. Its a 19inch Nanao MC2000 that ive installed a cap kit on but when i went to try it out i missed the giant sticker on the back of the tube that read 100 VOLT! Strange how i would miss that giant red sticker as i was plugging it into a 120 volt outlet. So oviously i blew the fuses but now even with new fuses in the monitor and it being hooked to a 100 volt source i get nothing on the screen so i blew something besides fuses, anyone know where i might start looking to find the defunct part?



 Last but not least anyone ever heard of a monitor made by Shinlee? Cant find anything on the bet about it.
« Last Edit: January 04, 2007, 02:15:12 pm by minniescar »

Ken Layton

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Re: problems with two different monitors
« Reply #1 on: January 04, 2007, 06:10:35 pm »
The 4900 sounds like it has a weak picture tube. Putting it on a rejuvenator to trest it will confirm it. Then the rejuvenator can repair it.

The Sega/Nanao MC-2000 may have blown some diodes in the power supply section. Probably shorted those diodes.

Bob Roberts sells a capkit for the Shinlee on his capkit page.

Every one of the above monitors MUST be operated from an isolation transformer and the Nanao is definitely a 100 volt monitor. The reason it had a regular power cord on it is because the game it came from had a power outlet connected to an isolation transformer.

minniescar

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Re: problems with two different monitors
« Reply #2 on: January 05, 2007, 09:54:36 am »
As far as rejuvinators are concerned i did some searching on them and found a thread where you mention the 467 through 490 b & k model rejuvinators i was wondering about some of the earlier models of rejuvinators i see those on ebay quite a bit like the 465 model ,or the 440 model will those work? I personally dont plan on going into the arcade buisiness but i do have a tendency to purchase project arcade machines and try to resurect them so a rejuvinator might not be a bad purchase or would it just be easier to buy an old 19 inch tv set from the local good will for 15 bucks and swap the tubes. I hate to ask so many questions but this is drivining me nuts and making me think i should leave the crt's to the pros , only problem is i dont have any pros locally left anymore, they have all closed up shop.

 I thought i was doing pretty good i did a cap kit in my donkey kong, sega turbo, and ms. pac man machine and they all looked great when i got done so i figured why not learn more. And now the ms pac man ( wg 4700 ) is now acticing flaky 
acting like i turned up the flyback every now and then so maybe i should give up and spend my time searching for a pro.

Ken Layton

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Re: problems with two different monitors
« Reply #3 on: January 05, 2007, 11:54:15 am »
Any model before a 467 is just plain too old to use on modern monitors. A 466 can be modified to use the CR-23 adapter that most arcade tubes use, but it's a pain.

If you're not comfortable with doing the work yourself, you should get a pro to fix it.

minniescar

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Re: problems with two different monitors
« Reply #4 on: January 05, 2007, 03:54:23 pm »
 Its not really that i dont feel comfortable it just ticks me off that i keep getting close but no cigar. Just when i think ive fixed one something goes out.

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Re: problems with two different monitors
« Reply #5 on: January 05, 2007, 08:32:18 pm »
In many things, there are certain ways to troubleshoot an issue or circumstance, which is why there are technicians and schools.  To apprentice can be a cool thing, though not necessarily available.