Question about Navman F20 GPS Receiver

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Blank screen can get directions but no screen think loose connection but cannot find reciept for purchase not had system 12 monthes yet e.mail janeannwilliamson@hotmail.co.uk

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First thing is do you get the start-up screen when you turn it on?
If that appears tro be OK you may have inadvertantly changed the screen brightness.
Remove from the mount and rotate the unit in your hand to the light. Tap once on the screen and then tap where the light bulb icon is. Drag the brightness up to full scale. Also make sure it is not in night-time mode with its brightness turned way down. Not that you would probably suffer the same problem that I had but the screen will go blank and actually give you a thermometer reading if the unit overheats from being exposed to a locked car in full sun, Mine reported 52 degrees Celsius and failed to work until I cooled it down in front of the air-conditioner vents. Of course it was summer and I live in North Queensland Australia! Hope it comes good for you.

Posted on Apr 27, 2008

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I purchased a card for twenty dollars at walmart and then relized it was the wrong purchase, when I took it to the service desk they would not refund my money and gave me a number when I called that number...


Walmart does not issue refunds for prepaid phone cards and does not sell post paid cards seperate from phones. If you shipped it back see if you can obtain a tracking number. If you dont have one and sent the item without making a copy of the reciept then im afraid your out of luck. If you have the tracking number and reciept you can contact walmart's HQ at 1-800-925-6278/http://walmartstores.com/contactus/feedback.aspx or send written request for this to
Walmart Home Office 702 SW 8th Street Bentonville, Arkansas 72716-8611. If nothing else and you have the reciept and tracking number contact the BBB online.

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1 Answer

Purchased in sept 2009 and screen went blank in oct 09.they replaced it and now its doing the same thing


Hello,

can you still receive calls even when the screen is blank?

I don't think the screen is the problem of your phone, but a flex problem. This blank screen issue is a common problem with slide and flip phones.

This occurs as a result of constant opening and close of flip or slide phones which makes the flex to worn out.

The flex is the one that connects the screen to the phone main board, and once this flex is weak/worn out or loose contact, there won't be any display on the screen.

Therefore check the phone flex and not the screen. Screen doesn't just get spoilt, except it hits the ground or something.

Take care.

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sounds like the backlight is out, can you see a picture when shining a flashlight on the screen. if yes you have either a bad inverter power supply or bad screen (panel).
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Go to where you purchased the playstation,, they will have a copy of the reciept in there system, due to warranty issues. Yes you will need a copy of the reciept when you send it back to Sony.

1 800 345 SONY is the toll free number to contact them.

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The power -inverter board probably needs an overhaul.
I redo many of these.
If the screen was pinkish or flickering before it finally got to this point, it is possible that a bulb has gone bad.
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Apparently, this model has an Achilles heel...the ribbon that controls screen extension/retraction. I believe Pioneer extended warranties on this model to 4 years if purchased via a pioneer main dealer or sub contractor. Problems normally occur within 18-24 months from new. I assume your unit is at least 18 months old. Best to contact place of purchase or Pioneer directly.

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I had the same problem. So I figured I'd take it apart and see what was loose. I removed all the screws around the outside and pulled the back cover off. There is a ribbon connector at the top with a locking cover. The cover was unlocked. I re-seated the ribbon connector and closed the lock and it works now. Let me know if you need more details.

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