I really screwed up. I have a panasonic PT47WX42F TV that I tried replacing the "rectifiers" on. The part number that I ordered was a STK392-110. The orginal problem was when it was torned on, a click could be heard, the screen flashed then a pop could be heard, after which the red light on the front of the unit flashed three times. I tried replacing the "rectifiiers" and tore a small strip off of the circuit board. Any ideas on where to find a replacement board or have this one repaired? In over my head.
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Re: Damaged circuit board
Gary, contact the following site and leave a email as they have a remnanufacturinng process where they can remanufacture your board and repair the trace strips to like new condition, as your board is no longer available from panasonic. Heres the link. Be sure to include your model number http://servicemanuals.vstore.ca/
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HI, The Pc Board that is located in your set, has become unstable. there are several IC's that control convergence and input streams as well. the damaged board should be replaced asap. it is possible for a service tech to be directed to your home but, most will require you to transport your set to the actual repair shop. i will list the part Number below.
Panasonic Part Number: TNPH0370ADS(PC BOARD)$347.95
go on line to panasonic.com, try to find a phone number, when you call it, and ask for the parts dept, should be able to order with a credit card over the phone, will be cheeper that way--no part mark up
NUMBER OF FLASHES
IC4511 is on DG board. Asterisk indicates whole board is to be replaced. In schematic, labeling on IC4511 indicates it does some form of video processing. Manual instructs to add an "S" at end of board part number when ordering.
PIP PROCESSING, SPLIT, SEARCH, FORMATS
Try resoldering the main bridge rectifier on the power amp circuit board. You will have to remove the board from the heat-sink. The rectifier is mounted off the side of the board and screwed to the back of the heat-sink. Resoldering this usually cures that problem.
Is your TV still under warranty? This problem seems common on this site
with the Panasonic brand. I really can't say what exactly is causing
this problem, but it seems like something in the power circuit board is
faulty. My advice would be to call Panasonic's Technical Support
Hotline and speak to a Technician. It could even be a problem that has
warranted a recall of that particular model. The number for Panasonic's
Hotline is 1-800-211-7262. Or, you can contact them via e-mail @ www.panasonic.com under "Get Support". Hope this helps...
take the back cover off as the mirror is attached to it then you can clean the mirror and the inside screen and colour gun lens's (3off) there should be 8 to 10 screws around the outer edge of frame and about 6 to 8 holding the screen portion to the chassis
Panasonic PT53WX42F with same problem. 3 blinks after power on for a few seconds, no picture or sound. Solution: replaced two convergence ICs (STK392-XXX) located on the large green printed circuit board. ICs are very large and screwed into two large heat sinks and soldered to board. Cost is approximately $6 each. Easy to replace if careful. May be able to access solder joints on bottom of board by removing screen on bottom of cabinet or simply remove 4 screws that anchor plastic holder to cabinet and tilt up. I did not disconnect any inter-board connections. Remove heat sink screws. Desolder using suction bulb or solder sucker. Works great. Finish off with solderwick braid if necessary to clear holes. 40 watt iron is enough do not apply too much heat to damage board lands. Remove IC. Clean heat sink by scraping away white heat sync compound. Apply generous amount of heat sync compound to new IC and coat evenly. Align and insert new IC holes, resolder with thin resin core solder being careful not bridge lands. Refasten to heat sink. Clean board and inspect for good joints and no bridging. Refasten plastic board holder. Carefully clean projection lenses while back is off tv. Power up and it should be fixed. Parts are obtainable on-line. Solder tools and board cleaner are available at Radio Shack or on-line also. I spent $20 on parts and supplies. This is not hard just a bit tedious. You can do it.