WG 25k7191 issues.

bsdpinball

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Replaced flyback, full cap kit, HOT, and voltage regulator. Installed chassis, plugged everytyhing in and get NOTHING. no neck glow, nothing. This is my first monitor repair and I am guessing its a simple fix. I adjusted the brightness of course and got nothing. The tube is 50 miles away and my friends house who I am fixing this for.

I can pick up an isolation transformer today so I can plug this in at the house. Without a yolk, tube or electron gun can I really test anything ? I need to get this working.
 
You should really have the whole thing, along with a way to give it a signal.

You never mentioned what the issues were prior to repair - same?
 
I adjusted the brightness of course and got nothing.

You also tried the SCREEN pot on the flyback, not just the chassis/remote board brightness pot, right? I just replaced my first flyback - it was a 25K7191 too - this past weekend and started to panic a bit because I was not getting a pic until I did the flyback adjustments.

I think about the only thing you could check without the monitor is to make sure the polarity of the caps are correct. I guess you could also check some of the more important resistors too (but I do not know enough about the monitor to tell you which ones). It would probably help to know what the monitor was doing, if anything, before the rebuild for others to narrow down what your problem is.

EDIT - Attempt to remove white text formating. I always click on the XAA button but it does not always work. I know it can be annoying (you come across several completely black posts too using the dark skin). Sorry Mod!
 
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Well that was annoying. Bri, you need to know not everyone uses the dark skin.

Next time you are at a K7000 that won't work after a rebuild, you need to measure the B+ and post it with the question. The value of the B+ is helpful in diagnosing the problem...
 
And any K7000 should be scrutinized for bad solder joints and broken traces. There are a couple common key points that when broke will cause an otherwise perfectly working chassis to not work or appear dead.

("perfectly working" to "not work".... did that line even make sense?) :)
 
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