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Chassis Part Symbol Defective Circuit

Symptom Shutdown,Reg b+ checked 105 vdc and when video would start to come up the set would shutdown. Found leakage between RP183 and JP242 ( checked 13 k ohms between them). Cleaned board and set came up and worked properly Standby reg, IPO20 not running, it was open

solution Clean board around RP183 and JP242 replaced IP020

ATC221 RP183 ATC221 IP020

Power Supply Power Supply

ATC221 BR004

Power Supply

ATC221 DP230

Power Supply

Replaced the Small Signal Board and now it shuts down Could unplug BR005 and it would work it goes from the small signal board to the little board supplying the Plug BR004 into DVD.BR004 was plugged into BR007 on the small signal board. right place Dead set. INF POW FAIL line is positive .7v. DP230 was the at fault. 70vpp in standby and 65vpp in run. Dead set. The -1.5v supply was +.7 in the fault condition turning on TR62 and keeping the set off. Replace DP230