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Author Topic: CRT Vertical size problem  (Read 905 times)

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MikeMelga

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CRT Vertical size problem
« on: June 02, 2023, 04:56:07 am »
Hi everyone.

I have an arcade cabinet with CRT monitor connected to a PC with a J-PAC and an ArcadeVGA. Everything worked fine although I could not get the image to 'fit' vertically. The monitor's Vsize was already at the maximum.
Last week I decided to upgrade my PC. I got a newer board and a newer gfx card. I am now using an ATI HD5450 which I flashed with ATOM to get the 15khz output and I use crtemu driver for display.
I all works BUT... now I have an even smaller vertical size picture (see attached image). The vsize adjustment on the monitor is already at maximum.

Is there any way I can 'expand' the image? What do I need to change? Resolution? Refresh?
Any setting on the gfx card or driver?

Thanks in advance,
Mike
« Last Edit: June 02, 2023, 04:58:08 am by MikeMelga »

grantspain

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Re: CRT Vertical size problem
« Reply #1 on: June 02, 2023, 06:37:55 am »
what monitor is it?

MikeMelga

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Re: CRT Vertical size problem
« Reply #2 on: June 02, 2023, 09:07:24 am »
Well....I don't know for sure. It came with the arcade.

From my searches online it's a Dual Frequency Philips A66EAK552X11. Thats is the correct model number but I don't know if it is Philips or not and don't know if it is dual frequency.
I've attached some pictures.



MikeMelga

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Re: CRT Vertical size problem
« Reply #3 on: June 02, 2023, 09:53:01 am »
Looks like the board also has a brand.
It seems Italian.

The tube is 28". Why does the board says 17"?   ???
« Last Edit: June 02, 2023, 09:55:01 am by MikeMelga »

grantspain

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Re: CRT Vertical size problem
« Reply #4 on: June 02, 2023, 10:12:40 am »
well you can see the problem, a 17" chassis on a 25" crt
its an intervideo vp series by looks of it
you could probably replace some components and get it to run correctly on a 25" tube

MikeMelga

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Re: CRT Vertical size problem
« Reply #5 on: June 02, 2023, 10:23:49 am »
That is way out of my league... but I can try to get some professional help here.

Do you know what needs to be changed?  :)

MikeMelga

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Re: CRT Vertical size problem
« Reply #6 on: June 02, 2023, 11:06:41 am »
well you can see the problem, a 17" chassis on a 25" crt
its an intervideo vp series by looks of it
you could probably replace some components and get it to run correctly on a 25" tube

I talked to the technician who sold me the arcade. He was also surprised. He is going to get me a 25" chassis.

Thanks for your help!

Regards