Question about Projection Televisions
We have no picture. Lamp is not the problem. We fixed a few bulging capcitors. Do you think replacing the ballast is the next step? What the chance of success here?
Good Day; I would suspect the ballast, but try these first:
Causes: Cause #1 1. (Lamp may light and go out) suspect bad lamp part # 915P020010 2. Check for 12-volts DC at J-9 connector pin 4 on the Engine Driver PCB, if missing check for an open F9A09 on the Power PCB, if it is open replace F9A09 part # 283P127060 and the Light Engine part # 939P977010 3. (Lamp may light and go out) Check for 5-volts DC at J-9 connector pin 1 and 2 on the Engine Driver PCB if low or missing check C9A37 and C9A38 both 3300 UFD 10 V part # 181P732040 on the Power PCB (part # 930B921002) 4. At power on the lamp turns on and off three times and then the unit shuts down with a red lamp LED (lamp error). Replace the Light Engine part # 939P977010 5. Lamp enable line at J14 pin 6 does not switch to 5 volts after turn on, 12 and 5 volt supplies are good. Suspect the Light Engine part # 939P977010 6. Lamp enable line at connector J14 pin 6 on the Engine Driver PCB switches to 5 volts after turn on and does go to 0-volts (low) after 5 seconds, 12 and 5 volt supplies are good. Suspect the Lamp Power PCB (ballast) part # 939P978010 7. Lamp enable line at connector J14 pin 6 on the Engine Driver PCB switches to 5 volts after turn on but does not go back to 0-volts (low) after 5 seconds, 12 and 5 volt supplies are good. Suspect the Light Engine part # 939P977010. Good Luck, big IRISH.
Posted on Nov 04, 2008
Tips for a great answer:
Dec 19, 2012 | JVC HD-52G786 52" Rear Projection HDTV
Also, check if your unit is still under warranty/extended warranty
period, avail it because the manufacturer will fix it for free. Opening the
back cover will void the warranty.
Hope I helped you.
Have a nice day!
Thanks for using Fixya.
Jun 22, 2011 | Philips 50PL9126D/37B 50" DLP TV
Feb 04, 2010 | RCA D52W19 52" Rear Projection Television
Dec 30, 2009 | Samsung HLP4663W 46" Rear Projection HDTV
Nov 20, 2009 | Mitsubishi WD-65733 65" HDTV
Sep 02, 2009 | Mitsubishi WD-52525 52" Rear Projection...
Sep 20, 2008 | Samsung HLP5067W Television
Jan 14, 2008 | Toshiba TheaterWide 52HM84 52" Rear...
Dec 08, 2016 | JVC Projection Televisions
Dec 08, 2016 | RCA Projection Televisions
128 people viewed this question
Usually answered in minutes!