Question about RCA HDLP50W151 50" Rear Projection HDTV

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Hd50lpw175x7 Hi! Thanks! So Much! How do i change the capacitors! And what is the difference betwee the ballast and the power supply

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The power supply is what provides all the standbye voltages that get routed to the various other boards. The capacitors have to be unsolderd and the replacements solderd in.

Posted on May 29, 2008

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Jvc hd-52g886 wont turn on


Hi!
That's a clear indication that you have a bad power supply in your TV.
If you know how to DiY...I suggest you open your TV. Locate the power supply section, it is where the end of the power plug is connected. Replace all blown or bulge or leaked capacitors with same value. That will fix your TV problem.
The hardest part is to disassembling your TV cover, cause you will need to pry off the snap in lock at the edge of your TV.

Power supply board should look like this. Examine the capacitors in the board
power%281%29.jpg2_23_2012_11_31_16_am.png

After replacing blown capacitors...it should work again.
caps%281%29%281%29.jpg

Things you will need.
1. A plastic flat end screw or any object with flat ends....to fry off the cover
2. Soldering iron.
3. Soldering lead
4. Soldering pump.
5. Flat and Philip Screw
6. Replacement capacitors (of same value with the blown one) that you can buy to any electronics store.

Hope it helps

Feb 23, 2012 | JVC HD-52G886 52" Rear Projection HDTV

2 Answers

I HAVE A AKAI MODEL NUMBER PT5492 TELEVISION I HEARD A LOUD NOISE THEN THERE WAS NO PICTURE ONLY SOUND.


Sounds like your ballast need to be replaced, did you get sparks at the back of your tv?

Aug 24, 2008 | Akai Projection Televisions

1 Answer

Problem concerns Samsung HL-S5087W. All of a sudden, TV goes through 3 startup cycles and shuts down resulting in 3 blinking lights on front panel. What I've done: Completely cleaned inside of...


Hi,

3 blinking led light at the front panel is an error code for lamp malfunction. If you've already replaced the bulb and yet the symptoms remain the same, then high chance that the fault came from the ballast board because the supply voltage is present.

Confirm if the bulb will lit upon powering on the unit. Open the lamp cover, bypass the lamp cover switch by putting tape to make it in closed position (making it still the lamp cover is attached to the housing) and then power on the unit. Check if the bulb will ignite or will light up, if not, you have to replaced the ballast board.

Hope I helped you.
Have a nice day!
Thanks for using Fixya.

Jul 14, 2011 | Samsung HL-R5087W 50" HDTV-Ready...

4 Answers

RCA M50WH72S Replaced bulb and ballast. TV comes on with good video for about 5 seconds, then off with good audio, front power light blinks 5 times. After a few minutes the video comes back on and repeats...


Check capacitors cp624, cp647 1000uf@35v each. They are in the power supply. Can be seen with bulge on the top. Seems to be a common problem with this model RCA.

Jun 07, 2011 | RCA HDLP50W151 50" Rear Projection HDTV

1 Answer

My theaterview tz61v61 has no sound or video i checked the fuses on the on board circuit and, with the ones i could see, seem to be fine i have little knowledge of tv ciruits and tv troubleshooting. ...


U get all solid LED lights indication front of bazel panel of the tv?U got power LED light flashes or no LED light at all?Check for DM power supply board,for dying leakage bulges up capacitors on it tops or puffing up on it tops.Replaced dying capacitors."LAMP"LED light indication on stay on or flashes.The projection lamp is dead,require changing,also hear alot of clickings too.Mean the the board call the Ballast board is also dead,require changing too.This Ballast board help to ignite the projection lamp.

Aug 05, 2010 | Toshiba TZ61V61 61" Rear Projection...

2 Answers

I believe it got some water dmg from water dripping from the ceiling. Can it be repaired? It makes a clicking sound when you turn it on, but it shows no picture.


That might be the ballast trying to ignite the lamp. You may have some serious problems. Have you tried replacing the lamp yet to make sure that ballast is good? If not, then you need to check the lamp then the ballast.

And also the power supply may be bad. You can open it up and take a look to see if the power supply has any blown capacitors too. A blown capacitor will look like an upside-down battery mounted to the board, but with a bulge out the top.

Feb 04, 2010 | RCA D52W19 52" Rear Projection Television

1 Answer

Samsung hlr5667w that won't turn on. Good lamp and ballast


Any light blink on the front. Whats the voltage to the ballast from the power supply. Common problem on these sets are bad lamp door switch. Try shorting the switch. Color wheel also is problematic but usually will be noisy and cause shut down. Check power board for swollen capacitors. Hope this helps

Nov 03, 2009 | Samsung HLR5667W 56" Rear Projection HDTV

1 Answer

Powering on and off randomly


There are two possible solutions to fixing this problem. First the Ballast has bad capacitors on it, and second bad Capacitors in the power supply.
I suggest you look into having the Lamp Ballast or technical name known as (Lamp Driver).. Have your Ballast Replaced on this model.

Sep 26, 2009 | Samsung HL56A650C Television

1 Answer

Hd50lpw175x7


Ballast Verification Process
1. Short out door switch (SP001)
2. Apply AC power and wait till DM module boots
3. Press power switch and observe spark gap on ballast
4. If spark gap arcs, suspect Lamp. If color wheel starts but ballast won’t strike
lamp, go to next step.
5. Measure BP252 on AC IN CBA for +300Vdc. If missing check door switch, cable
from AC IN CBA to switch and AC IN PCB. If correct go to next step.
6. Monitor pin 2 of BT251 for Ballast ON command from Light Engine. If present
suspect Ballast. If missing suspect Light Engine. Pin 5 of BT251 starts at 3.3V
after power switch is pressed and drops to .18V when the Light Engine sends the
start command. No change on pin 5 indicates Light Engine is suspect, change
on pin 5 with no ballast start, ballast is suspect.

Note: Lamp may arc but not start. Pin 5 of BT251 is "LAMP LIT" and goes to 1.48V
when lamp is lit. If ballast strikes lamp but lamp won’t stay lit, suspect Lamp.

Jun 09, 2008 | RCA HDLP50W151 50" Rear Projection HDTV

1 Answer

Hplpw175x7


Try replacing these 4 capacitors on the power supply first, as thats only abou 5.00 at radio shcak and that may solve your problem as I have had alot of the RCA DLPs have these capacitors go bad. They are capacitors CP624, CP639, CP641 and CP644 try replacing them first as you may just end up not having to pay out alot of cash needlesly. Please let me know if you need further assistance or how changing the capacitors worked and we can go from there to get the set up and running again.

May 29, 2008 | RCA HDLP50W151 50" Rear Projection HDTV

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