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NO DISPLAY How do i replace ballast? Thanks

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  • Anonymous Jan 26, 2009

    Ballast is apparently bad. How do I replace it?



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  • Master
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First, let us know what type of projector you have.

Posted on Dec 23, 2009

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1 Answer

Replace ballast


If you wish to get some details; check the site linked here. Pull up older posts.
http://electronicshelponline.blogspot.com/
Search the site by type in the "brand name" to your device; (Exclude the model number), in the "Search box at the top right of the display window of the Homepage" to get gathered related posts.

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Power light and lamp light blinking alternatly


Get into its service menu and reset the error buffer. If you wish to get more details, check this site linked below. Pull up older posts there. Check the site with patience, as it has over 2350 posts now. All are related to electronic equipment repair help. If you search the site in Timeslide option, which can be selected from the drop down list at the top left of the display window, it will be easy to locate the related post. You can also do a search by type in the brand name to your device into its search box at the top right of display window.http://electronicshelponline.blogspot.com/

Apr 25, 2013 | Televison & Video

1 Answer

The montier turns on then turns right off


Hi!
When a monitor display image for a second and then goes to black screen... there are possible reasons why this problem occur..

1. You need to check if the high voltage ballast transformer of your backlight inverter is about to be burned... the transformer is overheating..that's why you experience the monitor working for a couple of seconds and then it will shut off until the transformer cool down again and then it will be ready to work again...

2. Check also the backlight inverter if it is busted...the backlight inverter is the light source responsible for the image display you seen on your screen. If this are busted then all that you will be seeing is black screen

3. You need to check the power supply section for possible loose connections and possible blown and bad capacitors..

the ballast transformer has direct effect on power supply section.. when there is overheating transformer,,, the supply current from the power supply section becomes unstable.. and will not be able to supply the remaining good working ballast transformer.

In case you do not know, the ballast transformer generates high voltage for the backlight inverter to work....

Please be advise that if you don't have the knowledge, the proper skills and the right tools to open the back cover of your monitor and replace its part...don't risk it...

Otherwise, bring your unit to a credible technician and avail of warranty if there is any.....


Much appreciated if you rate this help...thanks...

May 25, 2010 | HP f2105 21" LCD Monitor

2 Answers

My Dell 1905fp Ultrasharp was coming on intermittently for a little bit and then it would not power up at all.


You said your monitor will be on for little bit and then would not power up anymore... there are two possible reasons why this problem occur..

1. You need to check if the high voltage ballast transformer of your backlight inverter is about to be burned... the transformer is overheating..that's why you experience the monitor working for a couple of minutes and then it will shut off until the transformer cool down again and then it will be ready to work again...

2. You need to check the power supply section for possible loose connections and blown capacitors.. the ballast transformer has direct effect on power supply section.. when there is overheating transformer,,, the supply current from the power supply section becomes unstable.. and will not be able to supply the remaining good working ballast transformer.

In case you do not know, the ballast transformer generates high voltage for the backlight inverter to work..The backlight inverter is the light source that is responsible for the image display of your screen...If the ballast transformer is not working or if the backlight is busted then the only thing that you will see in your screen is black....

Please be advise that if you don't have the knowledge, the proper skills and the right tools to open the back cover of your monitor and replace its part...don't risk it...

Otherwise, bring your unit to a credible technician and avail of warranty if there is any.....


Much appreciated if you rate this help...thanks...

May 24, 2010 | Dell UltraSharp 1905FP LCD Monitor

2 Answers

Display not available after a few second....i already replaced tl1451acn inverter ic, back light , , ballast capacitor (replaced)...the only one not replaced yet is high voltage transformer (4 pcs), 2...


Replace the high voltage transformer. It is the ballast for the backlight.. If you could pinpoint the one that's overheating then that is the one that needs replacement. Much better if you will replace the four transformer...


Hope that answer your question..
Much appreciated if you could rate this help. thanks.

May 21, 2010 | Dell E176FPB 17" TFT LCD Flat Panel...

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

Only warming up, no longer displaying after warm up


the ballast is not striking the lamp. replace the ballast.

Oct 14, 2009 | Toshiba TLP-S70 Multimedia Projector

1 Answer

Buzzing sound, resets 8 times, and then turns off. Bulb replaced


Actually ballasts run between 60-80 dlls. It does sound like you doi have a ballast issue, everytime a TV resets the ballast is the issue. Go to discountdashmerchantdotcom you'll see the ballast prices. Plus they also have free troublehsoot.

Aug 25, 2009 | Toshiba TheaterWide 52HM84 52" Rear...

1 Answer

Ballast replacement


Your set uses the Phillips UPH100W 1.3 100http://servicemanuals.vstore.ca/ 1amp bulb part number 6912V00006A which uses Ballast EUC 6913V0002A and the actual ballast isMB03CA part number 6871VSMB13F I would contact LG and give them these numbers. Is your ballast bad or is the BallastEUC bad? Let me know if I can help you further.

May 12, 2008 | LG RU-60SZ30 60" Rear Projection...

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