Hey Bob....I concur...also recheck your values on those 2 watt resistors. Values are very critical to properly balance these convergence amps. -Ed- Tel-Tek Electronics Ontario-Canada teltek3@xxxxxxxxxxxx teltek@xxxxxxxxx -----Original Message----- From: techassist-bounce@xxxxxxxxxxxxx [mailto:techassist-bounce@xxxxxxxxxxxxx] On Behalf Of Gemini Computer & TV Sent: Wednesday, June 15, 2005 2:27 PM To: techassist@xxxxxxxxxxxxx Subject: [TechAssist] Re: Toshiba Projo Model TP55F81\TAC-9678 Chasis\in shutdn. I am 99.9 % certain that if you replace the convergence ICs, your set will be fixed ( I realize it may not be exhibiting any convergence type symptoms but you just have to trust me on this one). That set uses STK392-110 but I would use good quality STK392-150 or STK392-180 as replacements (higher power ratings aand far more reliable). Bob Waterman, CETR #RI-28 Master Technician License #9109 Service Manager / Parts Manager Gemini Computer, TV, & Security Alarms (508)695-7302 (508)695-7769 FAX geminitv@xxxxxxxxxxx ----- Original Message ----- From: "armando guerra" <birdie@xxxxxxxxxxxxx> To: <techassist@xxxxxxxxxxxxx> Sent: Wednesday, June 15, 2005 2:35 PM Subject: [TechAssist] Toshiba Projo Model TP55F81\TAC-9678 Chasis\in shutdn. I am hoping that someone can give me their opinion on this problem .At power up,high voltage comes up for a few sec.and then the tv shutsdn.Led is blinking.To isolate the convergence ic's,I removed connector P712 and F850 from the conv.\power bd and it still shutdn.I even removed the conv.yokes from that bd and no go.Now,I removed all 3 crt bds,one at a time with their respective yokes and still went into shutdn,so the crts are not the problem.I replaced the vertical ic LA7833 since it can cause shutdn but did not help.I unsoldered the audio ic LA4282 to see if that was the cause and still no luck.Here is the only hint.No matter what yoke (not convergence)I remove and fire the tv up,the high voltage comes up and stay's there,will not shut dn.However,there is no pix or sound.At first,I tought it was that particular yoke as I removed the conn but the high voltage stay's up,no matter which of the 3 yokes I disconnect.I am running out of idea's and my hair is getting whiter so I hope that someone can help. Thanks for your help. Mando Birdie's TV & Electronics Casa GRande,AZ ------------------------------------------------------------------------ ---- - This Email List is Public. Remove: http://www.tech-assist.org/remove.htm Lost Password: http://www.tech-assist.org and select "Login Problems?". Appliance Repair List: http://www.tech-assist.org/secure/tip/chatjoin.htm#app Email Archives: //www.freelists.org/archives/techassist/ ------------------------------------------------------------------------ ----- This Email List is Public. Remove: http://www.tech-assist.org/remove.htm Lost Password: http://www.tech-assist.org and select "Login Problems?". Appliance Repair List: http://www.tech-assist.org/secure/tip/chatjoin.htm#app Email Archives: //www.freelists.org/archives/techassist/ ----------------------------------------------------------------------------- This Email List is Public. Remove: http://www.tech-assist.org/remove.htm Lost Password: http://www.tech-assist.org and select "Login Problems?". Appliance Repair List: http://www.tech-assist.org/secure/tip/chatjoin.htm#app Email Archives: //www.freelists.org/archives/techassist/