The power turns on but none of t he lamps illumniate . I've tried the twist and shake method, the press on all the boards to see where the cracked solder might be. How do I test the lamps for integrity and how are they removed for service. I just received this tv from a friend who said "If you can fix it it is yours" It has been moved three times in the last six months with changes in job, so I figure the solder has cracked somewhere Doug
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Re: bigscreen projection VS-4561 1993 built
Does high voltage come up (35KV)? if not then suspect the HOT(horizonal output transistor) to be shorted or the flyback transformer to be bad or both. the CRTs for this set are no longer available.
here are some tips from mitsubishi.
1. SUSPECT R503 (3.9K 5W METAL) AND T500 (336P009030) FAILURE. LOCATED ON PCB-MAIN IN HORIZONTAL DRIVE CIRCUIT 2. DEAD SET. CHECK R2045 AND R2048 BOTH ARE 6.8 OHM 3W OFF PIN 5 OF IC2003 ON THE SIGNAL PCB.
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I have a wd-57731 The lamp light blinked orange. i replaced the lamp turned the tv on and the timer blinks green for one minute and then the lamp light blinks orange again. It won't turn on. Can you suggest anything?
When you replace the lamp on a Panasonic DLP or LCD TV you will need to reset the lamp timer to zero for the TV to reset the lamp timer and extinguish the change lamp indicator.
There are two methods used depending on which model TV you have. The older units use the first method and newer units use the second method. You can tell which method you need to use by whether you have a PIP and/or SPLIT button on your remote. If you have them use the first method, if you don't use the second method.
Method number 1 (for older units):
Follow the procedure below. You use either PIP or SPLIT button depending on whether your remote has SPLIT or not. Some do not.
Perform lamp timer reset only when the lamp has been replaced. The idea is to know when to replace the lamp before the end of it's life when it could explode or short out causing a hazadous condition. If you reset the lamp circuit at any other time the replace lamp warning will not come on at the recommended interval.
Be sure the power cord is plugged into a properly grounded wall outlet. Then, press the POWER button on the projection display or the remote control to turn the unit on.
While pressing the VOL- button on the projection display, hold down the PIP or SPLIT button on the remote control at same time for more than 5 seconds.
If your remote does not have a split button you use PIP, if it has a split button, you would use SPLIT.
When reset procedure is complete, the screen on the TV will indicate that the lamp has been reset. When lamp time reset is finished, the LAMP indicator goes out.
Method number 2 (for newer units):
Press volume down on the TV and the zero button on the remote at the same time for longer than 5 seconds and it will reset the lamp to zero.
These procedures should reset your lamp timer and you will be good until the current lamp fails or the change lamp indicator illuminates again signalling that it is time to replace the lamp. Three to six years on average depending on how much you run the unit per day. Do not ignore the indicator. Change the lamp immediately to avoid further damage and expense or worse.
Sir try to reset the lamp timer. you should press the "display" button on the remote then "5" then the "volume up key" and power "on" you should do this while the tv is in standby mode. Then press "Jump" 3 times to enter the DE service menu. Your tv will display the total lamp hours. Reset the lamp time by pressing channel 3, then mute, then enter. this will make your lamp hour timer to zero. Good day and best regards.
Check the bulb again and look at the root of where the main stem comes out inside and be sure you don't see any bubble like appearence around the stem at the bottom there. If you do see this then the bulb is bad. Otherwise try this: Hold volume down on front of unit and pip on remote for about 5 seconds. Message will come on screen that timer has been reset to zero. This sets the lamp timer to 0