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Old 08-16-2011, 08:16 PM   #1
Icitte
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Default BenQ FP731S No screen at all!

I've got a BenQ FP731s that doesn't come up. Only green light. Not even the BENQ flash screen, nothing. Open it to see if there is any bad caps; nothing. Check the Fuse (2ah 250v) it's good.

I'm a noob and I need help!

Thanks
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Old 08-16-2011, 08:32 PM   #2
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Default Re: BenQ FP731S No screen at all!

The FP731 are famous for bad solder joints on the inverter transformers, this leads to shorted transistors and a blown picofuse.
You will need to test the transistors in the inverter section, as well as the picofuse.
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Old 08-21-2011, 08:37 AM   #3
Icitte
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Default Re: BenQ FP731S No screen at all!

Quote:
Originally Posted by smason View Post
The FP731 are famous for bad solder joints on the inverter transformers, this leads to shorted transistors and a blown picofuse.
You will need to test the transistors in the inverter section, as well as the picofuse.
is it something we can "visually see"?
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Old 08-21-2011, 09:19 AM   #4
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Default Re: BenQ FP731S No screen at all!

No, you'll need to measure with a meter.
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Old 08-21-2011, 01:34 PM   #5
Icitte
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Default Re: BenQ FP731S No screen at all!

anybody have a website to know HOW to test electronic item, onboard and offboard!

I would appréciate. Thanks. Now google time.
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Old 08-21-2011, 06:25 PM   #6
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Default Re: BenQ FP731S No screen at all!

Quote:
Originally Posted by Icitte View Post
anybody have a website to know HOW to test electronic item, onboard and offboard!

I would appréciate. Thanks. Now google time.
Try checking out YouTube. There are many videos posted on how to use a meter to check various components.
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