Question about Pioneer PureVision PDP-5030HD 50 in. HD-Ready Plasma Television
I've experienced what seems to be a combination of problems reported by others with this monitor unit: For the past year, occasionally I've see a "faded" patch of pixels at the top of the screen, near the center. Often this seemed to happen when a sold color was displayed in the area continuously (for example, during the Olympics soccer matches, when the green grass was continuously displayed in that area). Or it would appear where there might be a shiny patch on somebody's forehead. Turning off the monitor for awhile would alway help the problem go away. But I hadn't noticed this symptom recently... Just yesterday, I experienced a complete failure of the power supply. This occurred when turning the system on - mading a pretty loud POP. I've taken a look inside and see that a 0.1 ohm resistor (R133) blew. Also a 0.47 ohm resistor adjacent to Q127 and it's heat sink is toasted . I've tried testing the power connections to the large right (X DRIVE ASS'Y) and left (no obvious name) boards, but don't measure shorts - but maybe I'm not testing the right pins. I'm planning to replace the blown resistors, but am afraid there is a deeper problem which caused the failure in the first place. Any suggestions on more detailed analysis I can do to determine the root cause would be greatly appreciated!
See the pdf for the service manual here http://getmanual.ru/tv/sb/pioneer.pdf Have fun.
Posted on Sep 01, 2007
Where do you live. In new jersey? I maybe able to help you directly as I am an engineer like yourself. Usually low value resistors are the first to go because they cannot handle a power increase by much. This usually occurs because a power transistor is shorted causing more current flow to the biasing resistors. Is this problem on the main screen or the control box. Email me at firstname.lastname@example.org
Posted on Sep 01, 2007
Tips for a great answer:
Nov 01, 2011 | Element Electronics FLX3210 32 in. LCD TV
Aug 15, 2010 | Olevia Kolin DLT2711M 27 in. LCD...
May 05, 2010 | Pelco PMCL417 17 in. LCD TV
Apr 19, 2010 | Samsung LN32A550 32 in. LCD TV
Feb 08, 2010 | Toshiba 23HLV87 23 in. LCD Television
Sep 10, 2008 | Protron PLTV-32 Television
Apr 17, 2008 | Vizio GV46L 46 in. LCD Television
212 people viewed this question
Usually answered in minutes!
Step 2: Please assign your manual to a product: