Making a Cap Kit (!!!Monitor wasn't dull after all!!) Still need help!

So - the monitor wasn't dull, it was the 4 slot board I was using!

I popped in a 1 slot I had and the picture was much much better. Now I have to ask, what could possibly cause the brightness to be different between the two boards?

The 4 slot looks good in one of my other machines, but seems to "not like" this one, while the 1 slot looks great!

If you do not wish to do a blanket change (I would recommend it if you are able to id the monitor type) it takes a little time but it is no great expense and you then know the jobs right
Replace. In order of preference.

1. any electros that have bulged tops or appear to have been or are leaking. Often shrunk plastic casing sleaves indicate heat and are a givaway - replace any that look like this.

2. All caps in the vertical output stage (they will have the same circuit ref # series. eg. C421, C425, C431 etc.

3. All caps in the monitors psu primary.

4. The 180 volt video output stage smoothing cap, it will be something like 10 uF 250 volt. If faulty the 180 volts will be low (If there is a prob here it would probably fall into point 1 listed above)

By the time you replace all these there shouldnt be too many left.

Thanks, the monitor is a bit dim and I was hoping the cap replacements would help the brightness as well as help me feel better about the condition of the monitor

Since it's a japanese cab and hte tube is toshiba, I've heard the board might be a nanao, but I can't find any sites that sell cap kits for a 29 (27 in US) nanao monitor.

The dim monitor may be down to a low emmission crt.
No cap kit will fix that

Cheer up, it may improve

Bump, for new (if puzzling) info