I have a Mitsubishi VS411R (still in the customer's home) that the customer complaint is that the picture was intermittenly jittering and bouncing for about a week with convergence separation, then the jitter stopped and the convergence was still out and was completely unresponsive to the customer convergence adjustments. I walked in to his home with new STK4274's and found that the 1.6 amp fuse (F8A0) was blackened and of course open. This fuse is for the +20 volt supply. The -20 volts was fine. I replaced the STKs and the fuse and within 2 seconds the fuse opens. I can find no obvious shorts or loads so I also replaced the STK4275 focus IC which also uses this supply and still have the same conditions. If I remove either connector "VY" or "VU" from the convergence board individually, the fuse does not blow but the resistors R8K6 and R8L2 (for connector "VY") or R8J7 and R8K3 (for connector "VU") will start cooking really quick due to no load. I do not have the service manual so I called Mitsubishi Tech Assist from the customer's home because I suspect either the red or blue yoke (part# 330P116010 which is NLA) might be the culprit but I had no way to tell which if either was it and Mitsubishi had no reports of this symptom and were at a loss of what else it could be or how to check the yokes. Before I condemn the set, I figured I would ask if anyone has encountered this previously as you all know I hate to concede defeat! Bob Waterman, CET® #RI-28 Master Technician License #9109 Service Manager / Parts Manager Gemini Computer, TV, & Security Alarms (508)695-7302 (508)695-7769 FAX geminitv@xxxxxxxxxxxxxxxx geminitv@xxxxxxx www.geminicomputertvsecurityalarms.com ----------------------------------------------------------------------------- Jokes, complaints, off topics, general chat. Everything other than repair help problems can be found at this new list. No archives and posts will not be found on Google or any other engine!To remove or join, email chat-request@xxxxxxxxxxxxxxx with remove or join as the subject. Send to the list at chat@xxxxxxxxxxxxxxx once subscribed. ----------------------------------------------------------------------------- Lost Password: http://www.tech-assist.org and select "Login Problems?". Email Archives: //www.freelists.org/archives/techassist/