Author Topic: bet and win 250 dashboard backlight  (Read 28338 times)

gazibarev

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bet and win 250 dashboard backlight
« on: May 30, 2011, 04:20:04 PM »
Please help. Dashboard backlight on my 250 bet and win is dead. How to fix it??

gazibarev

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Re: bet and win 250 dashboard backlight
« Reply #1 on: June 01, 2011, 08:36:42 PM »
up

coldice

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Re: bet and win 250 dashboard backlight
« Reply #2 on: June 11, 2011, 01:21:34 PM »
how did you repair it????

gazibarev

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Re: bet and win 250 dashboard backlight
« Reply #3 on: June 19, 2011, 10:28:16 AM »
I still have not fix it :-[ :-[ :-[

NigelB

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Re: bet and win 250 dashboard backlight
« Reply #4 on: May 23, 2012, 12:59:01 AM »
Mine died just after a year of purchase (2002). Never got it fixed yet and every year in winter I say to myself : I gotta fix this...
Did you manage to get yours done?

NigelB

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Re: bet and win 250 dashboard backlight
« Reply #5 on: July 16, 2012, 12:33:40 AM »
OK, if anybody's interested, the dashboard backlight is NOT fixable.

It appears that the "backlight" is actually an illumination strip - i guess it is some or other type of flourescence activated by electricity.

Getting the unit apart is another beast, which presented a nice challenge. The front cover is glued tightly shut so cannot be lifted out. So I drilled it out, using a small bit and about 300 holes (just a guess). After that it was plain sailing. I took everything apart except the needle because i was afraid that once the needle comes off it might not fit properly again. The strip was then almost accessible - just had to cut it so that I could slip it out around the needle.

My plan is to use 5 or 6 hi-bright green LED replacements. Now that the illumination strip is out I can get the LEDS right up against the perspex reflector lens - at least I'll be able to see my speedo now at night! The front cover will be reglued / resealed into place with some good silicone.

cheers

zombie

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Re: bet and win 250 dashboard backlight
« Reply #6 on: July 16, 2012, 12:40:12 AM »
Nice work.
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Rudolf

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Re: bet and win 250 dashboard backlight
« Reply #7 on: July 19, 2012, 10:36:36 AM »
I've measured the two terminals leading to the illumination element using a multimeter and found out that there isn't any voltage going in. I believe there is a problem with the electronics powering the lighting element and i'm thinking to bypass the original electronics and create a separate circuit to power that element. Just need to find out at what voltage is the backlight working.

zombie

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Re: bet and win 250 dashboard backlight
« Reply #8 on: July 20, 2012, 12:00:13 AM »
Check for power into, and out of the switch. This should be a 12V circuit unless it was LED lit.
"They have nothing in their whole imperial arsenal that can break the spirit of one Irishman who doesn't want to be broken."   Bobby Sands...

Rudolf

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Re: bet and win 250 dashboard backlight
« Reply #9 on: August 11, 2012, 09:00:42 PM »
I've checked and tried to light up the element by providing electricity separately. I also found out that there aren't any LED's. There are two contacts feeding the illuminator. I also found out that the backlight is a electroluminescent backlight or EL Backlight Sheet.
« Last Edit: August 11, 2012, 09:22:22 PM by Rudolf »

Rudolf

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Re: bet and win 250 dashboard backlight
« Reply #10 on: August 11, 2012, 09:24:12 PM »
It glows a phosphorous green when on. I only have an issue because the backlight sometimes it turns on and sometimes it switches off randomly.

zombie

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Re: bet and win 250 dashboard backlight
« Reply #11 on: August 13, 2012, 01:27:44 AM »
I'd drill some holes, and add led's
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Rudolf

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Re: bet and win 250 dashboard backlight
« Reply #12 on: August 13, 2012, 06:33:20 AM »
In the PCB or the white plastic fame under the LCD? (Grand Dink/Grand Vista 250)
« Last Edit: August 13, 2012, 06:56:31 AM by Rudolf »

Rudolf

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Re: bet and win 250 dashboard backlight
« Reply #13 on: August 13, 2012, 06:51:38 AM »
The contacts of the backlight. (Grand Dink/Grand Vista 250)
« Last Edit: August 13, 2012, 06:56:15 AM by Rudolf »

Rudolf

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Re: bet and win 250 dashboard backlight
« Reply #14 on: August 13, 2012, 06:52:31 AM »
The circuitry of the dashboard. (Grand Dink/Grand Vista 250)
I believe that the little black box "Epicenter E5-652Z" is the DC/AC inverter for the backlight and is faulty.
I read that it runs on  5V DC +10% and puts out around 80V AC +15% @ 600Hz +20%.
« Last Edit: August 13, 2012, 07:10:30 AM by Rudolf »

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