Re: Need Help with Electrohome G05 XY monitor

Would the B+ (I'm not sure what the "EHT" is) help this? I have several of
these monitors myself and would love to find someone that can help me fix
them.

Scottt C.

Matt Rossiter wrote:

> This is kind of an interesting question. I have two working 15"
> Electrohome G05 monitors from Asteroids Cocktail games. One of them
> had a pretty bad tube so I decided to buy a replacement from Hawkeye
> Picture tubes. It works great except with this tube I can't get the
> brightness to come down enough. After it warms up, I can start to see
> a dot in the middle with retrace lines. Even when I have both the
> contrast and brightness all the way down I still get a picture. I've
> already determined it's not the EHT or the deflection board because
> they work fine with the older picture tube. The voltages are all
> correct too.
>
> So, my question is, is there a good way to modify the circuit so the
> brightness voltage (G1 ?) isn't so high? Perhaps change the value of
> R516 or R518?
>
> http://www.arcadehelp.com/manual/monitor/electrohome/G05-802.pdf
>
> Thanks
>
> Matt

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Received on Thu Jun 9 22:28:49 2005