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Mits 527252 ballast

We have no picture. Lamp is not the problem. We fixed a few bulging capcitors. Do you think replacing the ballast is the next step? What the chance of success here?

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Good Day; I would suspect the ballast, but try these first:

Causes: Cause #1 1. (Lamp may light and go out) suspect bad lamp part # 915P020010 2. Check for 12-volts DC at J-9 connector pin 4 on the Engine Driver PCB, if missing check for an open F9A09 on the Power PCB, if it is open replace F9A09 part # 283P127060 and the Light Engine part # 939P977010 3. (Lamp may light and go out) Check for 5-volts DC at J-9 connector pin 1 and 2 on the Engine Driver PCB if low or missing check C9A37 and C9A38 both 3300 UFD 10 V part # 181P732040 on the Power PCB (part # 930B921002) 4. At power on the lamp turns on and off three times and then the unit shuts down with a red lamp LED (lamp error). Replace the Light Engine part # 939P977010 5. Lamp enable line at J14 pin 6 does not switch to 5 volts after turn on, 12 and 5 volt supplies are good. Suspect the Light Engine part # 939P977010 6. Lamp enable line at connector J14 pin 6 on the Engine Driver PCB switches to 5 volts after turn on and does go to 0-volts (low) after 5 seconds, 12 and 5 volt supplies are good. Suspect the Lamp Power PCB (ballast) part # 939P978010 7. Lamp enable line at connector J14 pin 6 on the Engine Driver PCB switches to 5 volts after turn on but does not go back to 0-volts (low) after 5 seconds, 12 and 5 volt supplies are good. Suspect the Light Engine part # 939P977010. Good Luck, big IRISH.

Posted on Nov 04, 2008

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Picture has progressively darkened over the past few months. Replaced the lamp which did not help. Next place suggested replacing te lamp ballast which did not help either. Now I'm being told it s


You might want to talk to JVC as this model had all kinds of issues--missing any color, picture inverted or backwards just to mention a few.

The solution was to connect it to a computer and use a jig from JVC and download two up grades on sd cards and install them manually.

I mention this as the Light engine in the set communicates with the main chassis and you in fact may have a issue with that.

At least make a call to JVC---saw about 40 sets with this model where this cures all sorts of communication issues--the engine if "set" wrong could easily cause this problem.

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Hi,
If it is a lamp led light in the front panel, this is an indication that the lamp is not working. Pop sound was came from the electrolytic capacitor most probably in the ballast board that's why the lamp is dead. When the ballast board gone to malfunction, no high voltage will feed to the lamp resulting to that kind of symptoms.
Faulty capacitor has a physical indication of fault like bulged/dome at the top. Check the ballast board and inspect the capacitor. If you found it faulty, I would advice you to replaced the entire ballast board if you can't troubleshoot it yourself. Click this LINK for the replacement.

Also, check if your unit is still under warranty/extended warranty period, avail it because the manufacturer will fix it for free. Opening the back cover will void the warranty.

Hope I helped you.

Have a nice day!

Thanks for using Fixya.



Jdvillanueva

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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.

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SHOULD HAVE REPLACED THE BALLAST WITH THE LAMP AT THE SAME TIME, YOU MIGHT GET LUCKY AND ONLY HAVE TO REPLACE THE BALLAST, DON;T TURN IT ON ANY MORE OR YOU WILL WASTE THE LAMP

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Blessings,
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HI. the actual issue will be a failed ballast device. replacing this damaged power regulator will fix this issue. you can order your new ballast by clicking the link below.

Ballast(Click here to order)

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my e-mail is <ultraman_s@yahoo.com>

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