Tip & How-To about Televison & Video

How and when to change the ballast in a DLP TV.

When you have replaced the lamp in your DLP projection TV, and you still get lamp warnings and blinking standby lights or the light levels are extremely low, compared to the old lamp, your ballast probably needs replaced. Odds are it shorted out or developed problems when the old lamp failed.

This is not a hard unit to replace on most sets but may require a little knowledge and familiarity with DLP projection units. The ballast makes the voltages for the lamp circuit. The ballast is generally located near the lamp and has two large soft rubber wires going to the lamp assembly. If you follow the wires from the back of the lamp, the box they lead to is the ballast.

Replacement of the ballast involves removing any screws holding the cover on and the board in the TV. Disconnecting any wires from their plugs. Mark them with a sharpie prior to removal for easy assembly using a different number for each connector.

Reassemble the unit using the new board and make sure that all covers are in place and all wires are properly connected. You may be able to download a service manual at http://www.retrevo.com which will help with part numbers and has instructions on the removal and replacement of the ballast as well as diagrams and pictures to help with disassembly and reassembly. Retrevo does not have all service manuals. If you want one and are willing to pay about $16 US go to http://www.servicemanuals.net . The manuals can be downloaded instantly.

Any parts needed may be obtained at http://www.encompass.com or http://www.shopjimmy.com . http://www.encompass.com sometimes will have the service manual for free download. Again they do not have everyone and it depends on your model, but it certainly is worth checking prior to purchasing one.

When the job is complete your unit should be operational. If there are more problems try my tip at http://www.fixya.com/support/r4916941-diagnose_repair_projection_tv_high to troubleshoot the additional problems.

Good luck with your troubleshooting. If you need more help let me know.

Thanks for using FixYa and for the great rating. Please consider a testimonial. Thank You.

hardrocko

Posted by on

Televison & Video Logo

Related Topics:

Related Questions:

1 Answer

three green lights and two orange light blinking


One of them "LAMP" LED light indication is blinking?Yes,mean ur tv projection lamp life is over.Tv projection lamp been inside this tv like 1 1/2 or 2 year and tv been on and whatches like 4 or 5 hours of tv daily?Yes,to all these mean ur tv projection lamp require replacing.

Jan 13, 2011 | Vivitek V37655 56" DLP TV

1 Answer

KF42WE610 bad lamp... and ballast?


Hi,
DLP Lamp has electrodes inside and ballast generates high voltage that makes spark on these electrodes thus got high bright light. New lamp wont die due to bad ballast so replace lamp and see tv works or not.
This tv has self diagnostic feature, turn On tv and let it shut down, now check standby light that would be blinking in specific order, for example 3 or 4 times blink then pause for 3 seconds and again blinks.
Let me know how many times standby light blinking in this tv to help you with more info.
Thanks.

May 16, 2010 | Sony Grand WEGA KF42WE610 42" Rear...

1 Answer

Sony kds-r50xbr1 turns itself off and then green light blinks 52


I too have a Sony KDS-R60XBR1 tv and the issue that you are experiencing is due to one of your fans in the rear of the tv is not working.  The tv automatically shuts off in protective mode.  Make sure the POWER/STANDBY light is blinking and not the lamp light below it.  Is the power/standby blinking 4 times in red? If, yes then its a fan that needs to be replaced.  If its the lamp light blinking then you need to replace the lamp.  The lamp is easy to replace by ordering the lamp either from Sony for $250 or find it cheaper for approx. $150 from other DLP sources and replace youself by following your manual.  I hope this helps you.

Apr 22, 2009 | Sony KDS-R50XBR1 50" HDTV

1 Answer

no picture yellow standby light blinking


how old is the tv is it possible your lamp is burned out this is what a dlp screen would do.

Apr 14, 2009 | LG RU-52SZ51D 52" Rear Projection...

2 Answers

TV and Vedio-Projection televisions


what i would do is crack into the tv and watch the individual parts being careful not to unplug anything while you take the back panel off.....turn it on and see what happens. let me know what happens

Sep 30, 2008 | Televison & Video

Not finding what you are looking for?

1,951 people viewed this tip

Ask a Question

Usually answered in minutes!

Top Televison & Video Experts

The Knight
The Knight

Level 3 Expert

74106 Answers

Cindy Wells

Level 3 Expert

5097 Answers

Electro Med Services...
Electro Med Services...

Level 3 Expert

6694 Answers

Are you a Televison and Video Expert? Answer questions, earn points and help others

Answer questions

Loading...