Sharp 32U-S50 Symptom: set dead after lightning. could hear barely audible squeal. Found HOT, shorted(2sd2581), checked several semis in ps,installed HOT, instantly shorted. I wicked off collector of HOT and measured stby B+ was 215v ! I ordered IC 703(VHITEA1507) TEA1507P, and IC 703 (VHISE135n) SE135N, I then replaced HOT, 701, IC702(optocoupler) variety pc817 and IC 703 , fired set up, instantly blew HOT, With the help of Al Glutz, Bob waterman, Jason Mouton, and a download from members area, I found that opto had no B+ on primary side, voltages on control IC as well as all voltages were bouncing up and down.Found R712(10ohm 1/8w)open, replaced HOT and resistor R712, set fired up R712 started smoking, found D707(NTE 519) was leaky(had checked okay),this time set came up and ran. as I was doublechecking my final work I noticed that IC703 that came out of set was an SE125N,So I pulled the IC out and since I did not have a 125 in stock, I placed original back in set , worked fine. NOTE: THE TRITRNICS WEB SITE HAD THE PN FOR 703 AS THE SE135, AS WELL AS THE PRINT PART OF THE MANUAL, HOWEVER, IN THE PARTS LIST THE SE 125 IS FOR 32U-S50, AND 60, THE SE 135 IS FOR THE 36U-S60), HTH. Charles Betzler Best Electronics repair11@cox .net ----------------------------------------------------------------------------- This Email List is Public. Remove: http://www.tech-assist.org/remove.htm Set Vacation mailto:ecartis@xxxxxxxxxxxxx?subject=set%20techassist%20vacation Lost Password: http://www.tech-assist.org and select "Login Problems?". Email Archives: //www.freelists.org/archives/techassist/