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How do I bench test a digital clock?

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Old 06-03-2005, 12:59 PM
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SDGuy
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Default How do I bench test a digital clock?
Bought a like new digital clock on ebay and want to bench test it before selling it on ebay. Have I read the electrical diagram correctly?

pin:
30 - battery 12v+ always on to power clock (Red in harness)
31 - ground (Brown in harness)
15 - Ignition-on 12V+ to activate lcd backlight (Green in harness)
58 - to headlight switch for night illumination (Grey in harness)

Thanks. Howard
Last edited by SDGuy; 06-04-2005 at 06:16 PM.
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Old 06-03-2005, 03:17 PM
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Jakerx
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well to make it easy you could just test it by plugging it in your car. 10 minute job. sorry i can't help on the bench testing though.
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Old 06-04-2005, 01:50 AM
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Super Dave
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Terminal # 30 is 12v positive and termimal # 31 is ground.
The other two are for the light one for bright during the day and one for dim at night.
Simply use the battery on the car with two pieces of wire or a battery charger and a pair of volt meter leads connected to 30 and 31 to test the clock, its that easy.
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Old 06-04-2005, 03:37 PM
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SDGuy
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David - thanks much! Howard
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Old 06-04-2005, 06:14 PM
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Worked great. The above pinouts appear to be all correct.
Last edited by SDGuy; 01-04-2011 at 01:26 PM.
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Old 06-04-2005, 06:20 PM
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testarossa_td
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Originally Posted by SDGuy
Worked great. The above pinouts appear to be all correct.
Another working clock...a rare breed indeed
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Old 06-04-2005, 07:23 PM
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anyone have a broken one they want to give me?
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Old 06-04-2005, 07:24 PM
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Mighty Shilling
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I think Xagafinelle is still workin on some...I'll chat at him...
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Old 06-04-2005, 07:29 PM
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Peckster
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Originally Posted by SDGuy
Worked great. The above pinouts appear to be all correct.
Holy ****, what is that thing? They're supposed to light up like that?
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Old 06-04-2005, 07:38 PM
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Super Dave
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Originally Posted by Peckster
Holy ****, what is that thing? They're supposed to light up like that?
Only when the bulb is good, LOL
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Old 06-05-2005, 03:00 AM
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Zporsche944
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my bulb works but the screen is not working its like someone punched it only one/half a ticky thing comes on
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Old 06-05-2005, 03:35 AM
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sharky47
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Both of my clocks still work
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Old 06-05-2005, 03:37 AM
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Mighty Shilling
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My clock works fine...it's analog tho...
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Old 06-05-2005, 04:09 PM
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vette4lyfe
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My clock works, but won't light up.. stupid bulb
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Old 06-06-2005, 02:01 AM
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Super Dave
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Here is one that might just need a bulb.
http://cgi.ebay.com/ebaymotors/ws/eB...sPageName=WDVW
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