Fixed problem was open IC402 (KIA78L09BP-AT) +9 volt for "P Con" supply to video amp IC702 and audio circuit funny thing is audio was OK ----- Original Message ----- From: <tvservice@xxxxxxxxxxxxx> To: "Tech-Assist" <techassist@xxxxxxxxxxxxx> Sent: Thursday, February 19, 2004 5:34 PM Subject: [TechAssist] Sansui?Orion model TVS3245 > No horizontal/vertical sync (picture rolls sideways and downward) > Tuner and external inputs same symptoms > Replaced IC601 and Q606 No change ( have repaired others with same parts) > Menu OSD is rock solid > Only voltage discrepancy is IC601 pin 10 is +7 tenths volt, schematic shows > it as +7.8 volt > Tracing pin 10 (AFC flyback pulse) back to flyback only has 2 resistors and > 1 zener > All good > Waveform clean but low 10 vpp ?? schematic shows 120 vpp > subbing this drive signal with Sencore TVA92 have to input minimum 40 vpp to > get raster anything less will blank raster > but still no sync to picture > What am I missing? > Previous servicer replaced IC199 but did not fix then sent to us > Options are correct per service manual > adjusting H VCO will change but not lock in stable sync > > > Robert > tvservice@xxxxxxxxxxxxx > H & H Electronics Inc > Dallas, TX > > > -------------------------------------------------------------------------- --- > Lost Password: > http://www.tech-assist.org and select "Login Problems?". > Email Archives: > //www.freelists.org/archives/techassist/ > ----------------------------------------------------------------------------- Lost Password: http://www.tech-assist.org and select "Login Problems?". Email Archives: //www.freelists.org/archives/techassist/