Question about Panasonic PT-40LC12 40" Rear Projection HDTV

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Projection blub replacement

Does the housing and the bulb need to be replaced when the bulb goes bad or can you just replace the bulb?

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Just replace Blub.

Posted on Feb 22, 2009

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1 Answer

Sound no picture


Like stated before--May be another bad blub, especially if you used a generic or Neolux one. A phillips bulb WILL work right. Mits sets do NOT like generic bulbs !!

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Replaced the bulb is the ballast a separate piece? if so how do I change that. Had a repair man here he looked at blub,fuses,fan. cost me 180 for him to say blub which was not bad.


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No picture.


Most likely you need a new projection lamp. The "strange sound" you hear is most likely the lamp trying to fire.After awhile, the set"gives up' and shuts down. There is a small door in the rear, and the lamp is behind this. It pulls out, after removing a couple of slotted screws. The bulb inside of the housing is what goes bad--the housing does NOT need to be replaced, unless you get an "original"(read:: more expensive) mits lamp.


But a "generic' is available to replace the bulb in the housing ,Probably a P22-150, or 180 lamp, about a $300 repair, if you have someone come out--or, if you are mechanically inclined, you could replace the bulb from the old housing(EASY to do), yourself, and save about half of that, or perhaps more.

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Listen closely. The tv should make a high pitch whine as it turns on. If it does wait and see if it tries this a few times. If yes then check the bulb, I have seen cases where the lamp shoves the power connector back into the set. If the tv starts with a grown or heavy vibration noise, then your color wheel may have broken and needs replaced.

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How to change out blub


panel on the back of tv, opposite side of inputs. 6 screws takes a special screwdriver. I used needle nose plyers. once in the back, unscrew 2 stainless steel screws to take out black housing. www.nextdaydlp.com has your bulb. make sure you have the serial number off the back of your TV at the end of your serial number you will find either a Z or J. DONT GET THE WRONG BULB! taking the bulb out of the housing is different. you can either take a drill with a small bit to get the nuts out, or purchase the screwdriver called a T-8 TROX screwdriver.

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PT43LC14 Bulb Replacement


Long screwdriver? maybe if you consider about 3" being long (explains why wifes upset). I have replaced the bulb only and the housing with bulb several times with this pos tv. The housing and bulb is one philips screw behind the front snap off panel (the big front piece that has the hdtv stamp in bottom right corner, just pull out it has push in plastic stubs) then remove the philips screw next to the big white warning label where there is a small half circle cutout around it in the label. then one screw on the big black piece of plastic with a fold down metal handle. Then just pull strait out, little snug but as long as you loosen the screw it should slide right out. to replace just slide in whole housing replacement and tighten the 2 screws back up. As for just replacing the bulb, I buy mine off ebay and they have all come with real ez instructions. I believe there is 2 screws holding the clip for the 2 wires coming off the housing, just take that out as the new one comes with wires. you just screw on the 2 wires to new bulb tighten down the wire clip and put it back together. The housing can be just pried open with a flat head screwdriver (think there was a couple tack welds) then after new bulbs in just bend back in as much as you can, it will clear in the tv and be fine so it doesnt need to be exact. Hope this helps and if anyone wants another one of these tv's you can have mine!

stripclubgm

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