Sanyo Sanyo DP42740 P42740-01 J4HF [SM] free download

File name Sanyo_DP42740_P42740-01_J4HF_[SM].pdf

SANYO: DP42740-00 / 02 / 03 12/29/10 with PANASONIC 42" PLASMA PANEL (MD42H13NBE) p#1 SYMPTOM: TV's GREEN POWER LED WILL NOT REMAIN ON 2010-8B a) Unplug LVDS Cable (40 pin connector) from Main to Digital "D" Bd. (D5 connector) behind Main: This will eliminate the Main Bd., and see if the SMPS will power ON automatically, and remain ON. Plug the AC Cord to power (do not push the Pwr Key on the TV) and see if the SMPS will power ON. If the SMPS powers ON and remains ON, then the Main Bd. should be tried. If the SMPS continues to shutdown then resistance checks (#1-#9) below should be done. note: This panel has a self test mode, and unplugging the LVDS starts the self test. No raster is displayed, because a special jig is needed to activate the raster & video. Location of connectors is on RESISTANCE CHECKS TO POSSIBLY ISOLATE DEFECTIVE PCB page #2 1) Is pin #1 or #2 (55-60V) of (P35 connector) shorted to chassis Gnd? yes, shorted = PDP Panel N/G not shorted = go to step #2 Please re-install all PCB mounting 2) Is Pin #5 (5V) of (P25 connector) shorted to chassis Gnd? screws whenever a board is yes, shorted = go to step #3 changed, and before re-testing not shorted = go to step #4 the TV. The ground screws are 3) Disconnect (p25 connector) needed to prevent damage to the Is Pin #5 (5V) of (P25 connector) shorted to chassis Gnd? PCB. yes, shorted = SMPS N/G not shorted = go to step #4 After working on TV, if it has 4) Disconnect (SN20 connector) several horizontal lines or bars, Is pin #30 (5V) of SN20 connector shorted to chassis Gnd? please try reseating the flat yes, shorted = SN Bd N/G ribbons going to the SN Bd. not shorted = go to step #5 note: The TV must be OFF to 5) Disconnect (SS23 connector) re-seat these ribbons. The SN Bd. Is pin #1 (5V) of SS23 connector shorted to chassis Gnd? will be damaged, if you try to yes, shorted = SS