Question about JVC HD-52G886 52" Rear Projection HDTV

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Power board for jvc hd52g886

I replaced the board with oem from jvc,and it has the same part#,So i took the power bourd out and tested the boards side by side and everything tested ok,but i am limited with out a scope.I was hopping that some one hade these problems and had some info on how to fix it,if you have any new help please send it to me i would most thankful.

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You can try removing the 3wire plug that runs to the ATSC tuner (1orange wire 2 white wires). This will tell you if the tuner is causing the shutdown. This is a common problem.

Posted on Apr 03, 2008

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Posted on Jan 02, 2017

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My JVC DLA-X3-BU will not power on, 2 lights are red, lamp light is flashing orange, how do i get it to work?


I have a JVC DLA-X9-B projector which I think is the almost the same as the X7 and X3 the manual is the same.Its about 2 years old.It stopped working suddenly while I was watching a movie. Indicator lights were both on red and lamp light flashing orange. Replaced the lamp and it did not change the status,did cleaning filter bit , did lamp reset from the remote , did reboot and plugged it at a different ac outlet all that did not work . The lens cover is stuck at opened and the only thing you get when plugged in is the red light on and after 30 seconds the lamp light comes on orange .No fan came on no moving lens cover only flashing orange light.
From this conclusion was the power supply was working and software was a question mark either it was corrupt ,but the power cycle and lamp test start was normal and it checked the lamp and reported orange .So all the more it pointed to either the ballast or the power feeding the ballast.
I opened the projector up started with the screws at the bottom removed the the adjustable screw in legs. Removed the left and the right plastic cover ,then bottom cover, lamp cover, top cover plastic and then top metal plate cover, back cover until parts were all visible ,then put back the screw in legs a placed projector in an upright position. All this was in suspect that the ballast is the problem.
jvc-dla-x3-bu-will-not-power-2-lights-zogl1yh0b34d0jvl0ocjipaz-3-6.jpgThis is the top view photo.
On the right black plastic cover is the lamp fan and air duct.
At the center is the lens assembly and motors for focus lens shift etc.
on the left are stacks of electronics that are stacked board on board of about 4 or 5 layers.

jvc-dla-x3-bu-will-not-power-2-lights-zogl1yh0b34d0jvl0ocjipaz-3-11.jpgthis is the side view of the stacks of boards, to get to the ballast these have to be removed.NOTE LABLE ALL CABLES AFTER REMOVING THEM AS THERE ARE MANY OF THEM.Remove the side plate

jvc-dla-x3-bu-will-not-power-2-lights-zogl1yh0b34d0jvl0ocjipaz-3-18.jpg
Remove hdmi and land board,carefully there are connectors on bottom and all sides of this board.

jvc-dla-x3-bu-will-not-power-2-lights-zogl1yh0b34d0jvl0ocjipaz-3-27.jpg jvc-dla-x3-bu-will-not-power-2-lights-zogl1yh0b34d0jvl0ocjipaz-3-38.jpgthen remove the next board ,remember to lable all the cables.
jvc-dla-x3-bu-will-not-power-2-lights-zogl1yh0b34d0jvl0ocjipaz-3-51.jpgthen the next board bellow ,carefull this one has 2 side connectors on pictures top side
jvc-dla-x3-bu-will-not-power-2-lights-zogl1yh0b34d0jvl0ocjipaz-3-66.jpgthis will be what it looks like.Note the bottom most is the power supply.,This feeds the ballast as well as other low voltage Dc components.THE CONNECTOR WITH THE WHITE END AND BLACK AND RED CABELS IS THE BALLAST FEED(picture above) .The ballast is located in a black plastic box above the power supply.The only way to remove it is to continue dismantling further. jvc-dla-x3-bu-will-not-power-2-lights-zogl1yh0b34d0jvl0ocjipaz-3-83.jpgthis is the top view and the yellow tags you are seeing is cable labelson the wires.

jvc-dla-x3-bu-will-not-power-2-lights-zogl1yh0b34d0jvl0ocjipaz-3-102.jpgthis picture is with all boards removed to check for physical burn outs on components
mainly on power supply ballast feed and ballast itself.
jvc-dla-x3-bu-will-not-power-2-lights-zogl1yh0b34d0jvl0ocjipaz-3-123.jpgall boards out
jvc-dla-x3-bu-will-not-power-2-lights-zogl1yh0b34d0jvl0ocjipaz-3-146.jpgthis is the power supply board it has both low and high voltage output .Low for logic boards high output for ballast.Ballast feed from power supply should put out about 380 volts dc during projector boot up and zero during orange blinking light,(you can skip this removal of power supply if you read the 380 volts output on multimeter at boot up.Do this before taking all the boards apart but remove the side plate to access the output and check the output at boot up ,warning do not short this while reading output.
jvc-dla-x3-bu-will-not-power-2-lights-zogl1yh0b34d0jvl0ocjipaz-3-171.jpgpower board made by sumida and so is the ballast
jvc-dla-x3-bu-will-not-power-2-lights-zogl1yh0b34d0jvl0ocjipaz-3-198.jpgfinally the ballast is out this is what it looks like,do you see the dark grey wires they lead to the optocouplers (little led light sensing switch looks like a square little box all 3 are side by side)
jvc-dla-x3-bu-will-not-power-2-lights-zogl1yh0b34d0jvl0ocjipaz-3-227.jpg this resistor came out of the ballast ,notice physical damage like a hole in the center of it,tested it out of the board and yes its dead replaced this.
.Did all the checking one by one of the components then found one of the optocouplers had gone dead.The one located in the center of the 3 replaced that ,put it all back and got it working again.
The ballast cost 300 usd I bought one too and kept it handy just incase.
But for the meanwhile the old one is back and working just fine.

Aug 07, 2014 | JVC DLA-X3 Procision Projector

1 Answer

Jvc hd52g886 no sound


l would first make sure the speakers in the set did not get switched to OFF and also see if a DVD connected to one of the rear inputs has sound or not.



I know this set as saw one two weeks old first with no sound.

The entire audio circuit is on a single board (all of it) that is sandwiched between two other boards.

The first one was new so I Called Jvc and did some checks as they indicated---problem was on the audio board and since no individual parts for any board are sold--they told me to order the board--the board was on Factory backorder as a lot of them failed.

The customer did not want to wait so since a new set they exchanged it----Then they notified us to cancel the part order and dispose of the set in any way we wanted--they abandoned it to us.

I had our parts person keep the order going for the board..

l received the part about a month later, installed it (40 minutes) and had a 100% nearly brand new set that we later sold with a warranty--ours.

Most shops should be able to detect if the board is bad---you will have signal and audio coming in and if none at the output--bad board.

If I remember that board wholesales for around (at the time) a hundred dollars or a little more.

Hope this helps

SD TECH

Dec 12, 2012 | Televison & Video

1 Answer

L G LCD RZ-27LZ55 TV NO PITURE


If you are sure that the backlight board is good and that correct power is reaching your board then you might have a problem with the bulbs themselves. Also make sure that the board is grounded.

www.interliquidparts.com

Feb 24, 2012 | Televison & Video

1 Answer

JVC HD56G887 went out, no sound or picture. Both LED and power lights are blinking


You need to replace the power supply board. The new ones have a bigger heat sink - obviously JVC knows about the problem because they made the new ones bigger. It cost $250 from JVC and I installed it myself - took about 3 hours to do. If you are not tech savvy call a repairman. Hope this helps.

Jun 24, 2009 | JVC HD56G887 56" HDTV

1 Answer

Service man says light engine. how much? jvc model hd52g886


Whites are yellow can be a convergence or color balance problem, and lamp going out could also be a bad ballast board, black spots are usually light engine, could be a different fault on DMD board.

The fact is that when you get all this symptom together unavoidably you have a faulty light engine.

The light engine is the most expensive part to replace, its price for this model is always over $1600 ( I know, keep the heart tablets at hand).

Here is the part for your model: TS-COP7A-SAA-R

Mar 28, 2009 | Toshiba 46HM95 46" HDTV

1 Answer

Power problem with JVC LT-32x576


there is a firmware update for this model download from jvc website onto a thumb drive and plug it into the side plug.

Mar 10, 2009 | JVC LT-32X576 32 in. LCD Television

1 Answer

Rca 52 inch d52w2o tv


If one of the CRT boards is wet, then you have one of the 3 CRT's that is leaking cooling fluid and must be replaced. If the leaking CRT isn't replaced then you will have the issue repeat itself.

Jan 19, 2008 | RCA D52W20 52" Rear Projection HDTV-Ready...

1 Answer

Analog pwr board smoking


On this model there were two power boards used, i would look at the srp# on the power board and see if it is the same as the replacement. If you put the wrong one in it can burn up, but usually there is no damage to the rest of the set, just put the correct board in and power up. Hope this helped.

Dec 17, 2007 | JVC HD-52G886 52" Rear Projection HDTV

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