Thanks, I will use the 100W light bulb in place of the main fuse as I power it up and look for bad convergence (or no power with the conv yoke hooked up). Almost forgot that some direct view TV's have a convergence yoke! Have you seen this on Panasonics? Bil ----- Original Message ----- From: "Robert Herring" <supertek66@xxxxxxxxxxx> To: <techassist@xxxxxxxxxxxxx> Sent: Wednesday, September 12, 2001 10:38 AM Subject: [TechAssist] Re: What causes STK730-020 to pop? Pana 31", 1995 > > may be shorted conv yoke, unplug yoke to see if stk holds up > ----- Original Message ----- > From: "Bil Green" <tv.vcrrepair@xxxxxxxxxxx> > To: ".Techassist" <techassist@xxxxxxxxxxxxx> > Sent: Tuesday, September 11, 2001 6:44 PM > Subject: [TechAssist] What causes STK730-020 to pop? Pana 31", 1995 > > > > > > Panasonic CT31S185 (S?) > > 1995 31" TV > > No Power > > STK730-020 (IC801 SMPS Regulator) is > > apparently bad - R806 (0.39 ohms, 2W) > > opens instantly when replaced > > > > I have a feeling that another part may have caused > > this chip to fail. Electro on primary ESR'd o.k. > > Any comments? > > > > Thanks, > > > > Bil > > > > Help make your TechAssist online repair tips > > database better! Submit your fixes here: > > http://www.circuitwork.com/techassist/tip/#tips > > To unsubscribe write to: > > techassist-request@xxxxxxxxxxxxx > > with unsubscribe in the subject line. > > > Help make your TechAssist online repair tips > database better! Submit your fixes here: > http://www.circuitwork.com/techassist/tip/#tips > To unsubscribe write to: > techassist-request@xxxxxxxxxxxxx > with unsubscribe in the subject line. > > Help make your TechAssist online repair tips database better! Submit your fixes here: http://www.circuitwork.com/techassist/tip/#tips To unsubscribe write to: techassist-request@xxxxxxxxxxxxx with unsubscribe in the subject line.