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Author Topic: Broken 19K4903 monitor...  (Read 2508 times)

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Guest858

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Broken 19K4903 monitor...
« on: November 23, 2006, 12:03:35 am »
Ok, I bought a 1-slot NeoGeo conversion cabinet (sticker on back says Data East) and when I first powered it
up, you could see sparks/arcing on the monitor chassis.

A technician friend came over and said the monitor is a G07 monitor (stickers around the monitor mounts say
it's a Wells Gardner 19K4903, March 1985).

Anyways, my tech friend said the flyback is bad and to buy one, as well as a cap kit.  Not heeding his advice
about double checking the numbers of the chassis and the flyback with whatever I ordered, I bought the
Electrohome G07 repair kit from Bob Roberts.

When the repair kit arrived, my tech friend said it isn't the right one!!!  You can tell the pins of the old
flyback don't match the new one.  Also, there is a focus and screen knob on the old flyback, while the
new one doesn't have them.

So, here I am stuck with a non-working monitor.

I took some pictures and wrote down some numbers (the numbers on the flyback were worn out and I couldn't
really tell what the numbers/letters were).  Anyways, I'm hoping anyone can help and point me to a
place where I can buy the parts I need.  Or should I just buy a new/replacement chassis?  My tech
friend says that a new chassis will be compatible with the rest of the monitor. 

Hmm...I can't see a way to post my pictures via this guest account (I can't log in
because the site keeps on giving me login/password errors). 

Anyhow, there's a sticker on the side of the chassis that says 2930003328.
On the flyback, there appears to be 3 rows of information.  The text is
almost gone, but from what I can see, the 1st row says Q2809, the 2nd
row says MSH1FAPO3 (I'm not sure if the last three characters are really
PO3), and the 3rd row says 200972?3?1 (I'm not sure of the last 5 characters,
hence the '?' question marks).

Any help would GREATLY be appreciated!

SirPeale

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Re: Broken 19K4903 monitor...
« Reply #1 on: November 23, 2006, 01:52:11 am »
Picture is worth 1,000 words, can you post one?

If it is a K4900, you're screwed.  They don't make flybacks for them anymore.

Guest858

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Re: Broken 19K4903 monitor...
« Reply #2 on: November 23, 2006, 02:08:32 am »
I have the pictures ready for posting but don't know how to post 'em to the forum (i.e., I don't see an icon for me to
click to browse my computer for the pictures). 

Any ideas?

I can mail 'em to you and maybe you can check it out and/or post 'em here.

I have an account here but I still cannot log in with my username and password.  After several login failures, a
dialog box opens up to send me an email with a link to input a new password.  When I click on the link and
try to enter and save a new password, it says "invalid code". 

Yes, I totally agree that pictures would help.  I have 'em but can't post 'em.

Everywhere on the monitor frame indicates it's a 19K4903.  If it's true with what you said, then I
am screwed then, huh?  Would my next option be to just buy a compatible chassis, like those
8liners that I see people talk about?  Any other options?  Should I just plunk down the cash
to buy a brand new 19" monitor from Betson Pacific in Los Angeles (I'm located in San Diego and there aren't
any arcades parts places around here that I'm aware of).  I'm so tempted to buy one of those
new Nieman 25" monitors that I see in the Monitor/Video forum, but currently they don't have a
California distributor, it's probably a heck of a lot more cash than I'm willing to spend right now
to get this arcade cabinet working, and it probably won't fit the 23.75" width (inner) of the cabinet.

So, how do I post the pics and what would be the least expensive solution to get the monitor up
and running?

Thanks!

grantspain

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Re: Broken 19K4903 monitor...
« Reply #3 on: November 23, 2006, 04:35:02 am »
i don't know if wei ya make a chassis that will fit your tube if they do it will save you alot of money and time.try www.alvaamusement.com and you will find a email address to send them info,they will need the tube size,frequency(15k i would imagine),tube type and amount of pins on the neck and the impedence of the horizontal yoke,your tech friend should be able to find all that for you,good luck

guest858

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Re: Broken 19K4903 monitor...
« Reply #4 on: November 27, 2006, 02:34:50 am »
Ok, I still can't log on successfully to the forum to post some pictures here.  So, I give up until the bugs from this site has been removed.

Anyways, I've posted the pics here

http://www.flickr.com/photos/datuin/sets/72157594357231973/

The last 9 pictures of the set show the chassis, flyback, tube, and stickers of my dead
Neo Geo monitor. 

Any more feedback on what to do with this monitor would greatly be appreciated.

I figure to get the cabinet up and running in the quickest amount of time would be to just buy
one of those 19" monitors from Betson, like this one

http://www.betson.com/products/parts/JCM-44-4519-02

Anyone have any info on this monitor?  Is it worth it or should I just break down
and get something like that RGB-to-NTSC converter from www.jrok.com (btw,
does anyone know if these are still available?  I emailed jrok and never got a
reply from him)?  With one of these converters, I can re-use my old 20"
VGA monitor in place of this dead 19" arcade monitor.

Thanks again!

grantspain

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Re: Broken 19K4903 monitor...
« Reply #5 on: November 27, 2006, 05:00:27 am »
alva amusements do converters,you will need a cga to vga if you use a vga monitor running from a neo geo
www.alvaamusement.com

Guest858

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Re: Broken 19K4903 monitor...
« Reply #6 on: December 01, 2006, 04:40:07 am »
Ok, since it looks like I'm going to ditch trying to fix this monitor, I need to get rid of the repair kits
that I just bought from Bob Roberts and another from eBay.  I bought the one from eBay first for
$39 thinking it would work with my chassis.  When I got it, my tech friend said the new flyback wasn't
the same as the old one.  Then I bought another kit from Bob Roberts for $34 (includes shipping). 
Same story.

Since I still can't log in to the forums to post this in the Buy/Sell/Trade section, I'll have to post it here.

Brand new as I received them and never used.

So, is anyone interested in taking these off my hands for $26 each?  The price already includes
the $6 or so I'll be paying to send it priority mail via the USPS.


SirPeale

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Re: Broken 19K4903 monitor...
« Reply #7 on: December 01, 2006, 08:43:32 pm »
After reviewing the pictures, you surely have a K4900 series monitor.  Gotta love the fried char on your flyback.

I'm going to have to do a bit of research.  There's got to be a source of flybacks *somewhere* for these beasties.

I don't have one here (all mine are at the shop) so can someone post the number of a K4900 flyback?

Guest858

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Re: Broken 19K4903 monitor...
« Reply #8 on: December 02, 2006, 02:42:27 pm »
Peale,

Thanks for the info!  If you do find a place to get parts for this monitor, I would
greatly appreciate it! 

Are the cap kits from these G07 repair kits that I have compatible with
my chassis?  If not, you know of any place I can get rid of these G07 repair kits? 

SirPeale

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Re: Broken 19K4903 monitor...
« Reply #9 on: December 02, 2006, 04:27:34 pm »
Caps are caps; pretty much if you find a matching cap value on your board you can use it.

How many you'll find, since cap kits are tailored to a specific monitor, I can't say.

I can post them in B/S/T if you PM me your contact info.