Quesion about wg 19in

icekicker

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I got a question for you all, I picked up a 19in wg monitor no idea the model number anyway it keeps blowing fuses as soon as I turn it on, have any of you had this issue before? I know little about monitors just hooking them up thx.
 
wg19k7201 is the tag that fell off the metal I found it laying on the bottom, from what I read the flybacks toast, looks like a trip to my monitor guy. thanks for the link to the other post was very helpful.
 
if you have some soldering skills you can try and repair it your self. Im sure you will get a lot of guidance from everyone here.If you dont know how to solder its fairly easy to remove the chassis. There are plenty people on this forum that will rebuild it for you most likely alot cheaper that taking it to a repair shop.
 
If you want to see what's entailed, I have a few pics of replacing a K4915 flyback on my blog. It's a K4915 instead of a K7000, but the process is VERY similar. You can buy a new flyback at Arcade Cup. If you replace the fly, I would also replace the voltage regulator and the HOT at the same time.
 
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If you actually have a K7201, and don't see any sparks or obvious big cracks in your flyback, then it is most likely NOT the cause of your blowing fuses. One thing about the 7201 is that it has built in isolation (not needing an isolation transformer). This means that - even if the flyback or HOT were bad - it wouldn't typically cause the fuse to blow at start up because there is no direct connection between these parts and the fuse - unless there was a lot of arcing going on. It would just go into HV shutdown.

In fact, it is quite simple to figure out if your blowing fuse is being caused by the flyback or HOT (if you see no arcing) or by something bad in the PS section. Find L002 (next to the big yellow transformer), unsolder one leg, and pull it out. This will completely separate the deflection section (where the flyback and HOT are) from the PS section (where the fuse is) just in case something is being reverse induced. Put in a new fuse and turn it on. If it blows, then your problem is in your PS section, and you need to start checking the rectifier, the diodes, the transistors, and IC001 in that section. If not, then your problem is in the deflection area, and you should check the HOT first...
 
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