This machine boot after 30 minutes, slight line twist, first line completely out of sync, field has been synchronization, serious when no character, sometimes with black screen. To turn it off immediately to boot, fail more frequently. PC input (PC screen ontology, dismantle the tuner), is also out of sync, but the difference is always had a character. xhHservice manual download site
 xhHservice manual download site
Because of the failure time is relatively fixed, poor contact may be smaller, there should be a parts thermal stability is poor, has gone bad. OSD characters have two kinds, one kind is the tuner, the EURO and the TV the same OSD - 7 models, another is the OSD circuit produce plasma ontology. When don't pick up the tuner, characters produced by the OSD D2 plate screen ontology, answering the tuner is produced by the tuner characters OSD. Answered the PC have character that fault is not in D2 plate; PC and TV signals is to switch the D1 board, appear out of sync, that problem is not the tuner, must be in D1 plate. Associated with synchronous processing circuit has IC3002 (SYNCSW), IC8001 (SYNCSEPALATOR), IC8002 (makes) and peripheral. xhHservice manual download site
 xhHservice manual download site
 xhHservice manual download site
With a small mouth heat gun parts of D1 plate heating respectively, identified as IC8001 peripheral diode D8001, D8002, thermal stability is poor, with iron heated up the two diodes, appear out of sync. D8001 D8002 for line synchronous processing circuit related parts, in the normal.xhHservice manual download site