arcadecup
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- Oct 3, 2006
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Please stop "OHMING YOKES", replacing k7000 flybacks along with some others.
For the love of preserving this hobby STOP OHHMING YOKES please everyone.
If you are going to port in a tube at least port the original yokes over.
Ohming out a short is not and will never be the proper way for matching yoke reactance.
You will either overdrive your flyback, underdrive or be within spec and everything is fine (maybe, in a pseudo sense). Anything over driven or demanding higher than spec current will likely cause earlier failure. Drawing too much current with in the yoke and flyback will generate more x-rays and possibly go into an avalanche mode where it's more than TV limit regulations setting off geiger counters. Even porting over to a different tube with the original yoke does not guarantee a proper run due to gun bias differences and in really picky ones tube capacitance changing high voltage potential.
I get about 4-7 emails a month about ohming yokes. Please live with your burn and original tube. Please stop replacing k7000 flybacks that work as the replacements are far inferior. There are some flybacks where a replacement is surprisingly better than oem ; unfortunately not many. If its oem and working, please leave it. Sometimes more damage is done than intended good.
As far as lytics there are many boards that it makes sense to cap out without a doubt. pulling -testing them, putting back in would actually be more time consuming rather than pulling 20 and replacing them in most cases. You might have 3 confirmed bad caps, you might have 1 you could have 1 totally dead cap and maybe the rest all have drift an are on the way out. Would i recommend a full cap out on modern stuff like the d9200 or kortek 2914? absolutely not.
The real problem though is yoke mismatching with all this. It is an absolute epidemic. You can probably get away with the higher tolerance boards like the k7000, g07 era stuff. Easiest way to explain ohming a yoke is akin to measuring the weight of two different cars by eyeballing alone rather than the proper way with a precision scale. Hope this helps to bring insight and concern for the sake of keeping our beloved monitors healthy and original as possible.
For the love of preserving this hobby STOP OHHMING YOKES please everyone.
If you are going to port in a tube at least port the original yokes over.
Ohming out a short is not and will never be the proper way for matching yoke reactance.
You will either overdrive your flyback, underdrive or be within spec and everything is fine (maybe, in a pseudo sense). Anything over driven or demanding higher than spec current will likely cause earlier failure. Drawing too much current with in the yoke and flyback will generate more x-rays and possibly go into an avalanche mode where it's more than TV limit regulations setting off geiger counters. Even porting over to a different tube with the original yoke does not guarantee a proper run due to gun bias differences and in really picky ones tube capacitance changing high voltage potential.
I get about 4-7 emails a month about ohming yokes. Please live with your burn and original tube. Please stop replacing k7000 flybacks that work as the replacements are far inferior. There are some flybacks where a replacement is surprisingly better than oem ; unfortunately not many. If its oem and working, please leave it. Sometimes more damage is done than intended good.
As far as lytics there are many boards that it makes sense to cap out without a doubt. pulling -testing them, putting back in would actually be more time consuming rather than pulling 20 and replacing them in most cases. You might have 3 confirmed bad caps, you might have 1 you could have 1 totally dead cap and maybe the rest all have drift an are on the way out. Would i recommend a full cap out on modern stuff like the d9200 or kortek 2914? absolutely not.
The real problem though is yoke mismatching with all this. It is an absolute epidemic. You can probably get away with the higher tolerance boards like the k7000, g07 era stuff. Easiest way to explain ohming a yoke is akin to measuring the weight of two different cars by eyeballing alone rather than the proper way with a precision scale. Hope this helps to bring insight and concern for the sake of keeping our beloved monitors healthy and original as possible.
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