Betson Imperial/Kortek digital multisync monitor owners: please respond...

[ahofle]

After reading this thread: http://forum.arcadecontrols.com/index.php?topic=84370.0
I thought maybe we could figure out when this common 'squished side' horizontal linearity issue started and roughly what percentage people are affected by it.

This is the monitor I am talking about:
http://www.betson.com/products/parts/IMP-44-4070-RT
The one that got a great review from Retroblast:
http://www.retroblast.com/20040731254/Hardware/Betson-Imperial-_-Kortek-KT-2914.php

Please respond with the approximate date purchased and whether you got the monitor during one of their 'sales' ($100 off).
If the percentage is large, I think it would be worth advising people to stay away from them.  So please help out your fellow hobbyists and report your experience.

[ahofle]

Mine is squished on the right side mostly.
Got it in 04/2007 on sale for $369.

[vindes]

Mine squishes right side only, worse in some resolutions than others (some very little).  Got mine some time in mid-07 when there wasn't a sale.  Think I paid $470 or so and picked it up at the local distribution center to avoid shipping.

[grantspain]

we had been some research into this on Killercabs forum until it disappeared,this problem is seen on nearly all the tri sync chassis that come from taiwan.
rodotron,wei ya and betson all use the same base chassis and all have varying degrees of side compression which varies over resolutions and game boards

we found that 31khz exact showed very little and most cases no problems whatsoever,25khz had similar results and looked fine,15khz is where the problems really lie.some games would show some minor side compression on one side where others would display a greater amount.
we sort of came to the conclusion that this is down to way these chassis scan at lower res and some yoke mismatch problems.
these chassis are not being produced any more from what i hear

[ahofle]

Just curious then, why does this seem to be such a recent problem with this particular monitor?  I never heard anything about this until maybe the last year.  I mean look at the Betson review from Retroblast.  You can see that the monitor they have looks just about perfect from the 15khz screenshots.  Did the production only recently move to Taiwan or something?

You are right about the 31khz and 25khz modes though, those look fine with no squishing.

[grantspain]

we never got to final answer but all i can think is that the yoke is different with later models.
if you look at the chinese versions of these that are now available you will find a few adjustments on the yoke itself,now whether this is to counter act this problem or its just the way they make the yoke i can't answer

[lettuce]

Can add Pentranic Monitors to the list too!!! Though there was a guy over at killercabs who posted pics of his flat screen pentranic monitor just before i got mine and he had no problems what so ever, so maybe it was something to do with the curved CTRs, as thats what ive got!?

[jediz]

Squished on the right - bought it 6/2007 on sale as well.

[AMDman13]

Bought mine in like 3/06 and it's always been somewhat squished on the right and left. Mostly right though. It does kinda suck, but I just got used to it. The only solution is to run all games at 31khz ,but who wants that?.

[DeLuSioNal29]

Mine is squished on the right side.
Got it in 11/15/2007 on sale for $369.  I picked it up from their local headquarters in New Jersey.

It was serious enough that the tech called it in for repair (it has a 1 year parts and labor warranty).  It's definitely not  something that owners should "live with".  The topic linked above in ahofle's first post has more details.

~ DeLuSioNaL