Build Your Own Arcade Controls Forum

Main => Monitor/Video Forum => Topic started by: Podbod on September 23, 2012, 10:07:18 pm

Title: Hantarex 9110 (uk) wraps screen at high res. cap job?
Post by: Podbod on September 23, 2012, 10:07:18 pm

Hey.

I wanted to run this by the forum for your expertise before I buy the caps and attempt my first monitor surgery! :)

My 9110 fails to hold vsync correctly at high res. it doesn't roll but it begins drawing the screen half way down the monitor and then wraps over to draw the rest. The start point seems to depend on the amount of non linear data being drawn with white or primary heavy screens drawing ok and complicated screens showing the most wrapping ( this is a rough observation)
There's also a vertical flicker or about 1cm on some resolutions but is usually just a pixel of two. as mentioned, there's no roll it's just like there's an earthquake :)

Smaller resolutions are fine and show no problems.

Anyone seen this before? Is cap replacement the way to go?

Cheers for any info. Let me know if more info or a video might be helpful (can't provide right now as not at this address)

Pod

Title: Re: Hantarex 9110 (uk) wraps screen at high res. cap job?
Post by: Podbod on December 22, 2012, 03:49:22 pm

Hi,

I went ahead and replaced the 20 common capacitors (capkit plus the big 470uf cap) but I got no improvement.
I've taken a video now. Has anyone seen this before?

http://youtu.be/a9nvvE5n0BI (http://youtu.be/a9nvvE5n0BI)

Some extra info. I'm running a PC Radeon 4xxx with custom drivers to output 15khz. This is fed through an Ultimarc j_pac into the monitor. The j-pac provides a boosted signal and the first thing I had to do was turn down the monitor to stop the crazy brightness and bleed.

Cheers for any help. Let me know if I can provide any more info.

Pod

Title: Re: Hantarex 9110 (uk) wraps screen at high res. cap job?
Post by: Podbod on December 22, 2012, 05:30:27 pm

As soon as I wrote the previous post I remembered I've still got a vga cable connector attached to the monitor (added back when I was still using an arcadevga-ipac combo)

Went back and removed the jpac dvi cable and attached the vga cable to my gfx card and I get a perfect picture (well once I remembered to disconnect the jpac's power which was signal bleeding into the jamma connector).
So looks like the signal boost of the jpac is just too much for the monitor (or its just plain faulty). I'm going to ping an email to Andy asking for suggestions but if anyones had a similar issue then I'd be interested to hear any potential solutions.

Cheers

Pod