This set was in another shop where they replaced the voltage regulator Ic501 and now it's here with reg gone again . There isn't a thermal insulator between it and the heat sink and I don't know if one supposed to be there or if it was left out by other shop . I have repaired several of those but I can't remember if one is used or not . Thanks . Barry Appleby Burin Tv Repair Burin NFLD Canada burintv@xxxxxxxxxxx _________________________________________________________________ Get your FREE download of MSN Explorer at http://explorer.msn.com/intl.asp 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.