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SherwinManuel

Timex indiglo light

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There is a possibility that the battery contacts are not very clean.

The watch movement would be less likely to be affected by this as it draws very little current, but a higher resistance in the contacts might be enough to stop the light from glowing.

LEDs do fail, but typically last several orders of magnitude longer than old fashioned filament bulbs, but white LEDs require a minimum voltage before they will light, somewhere of the order of 3.3 Volts, and in a watch that uses a 1.5V battery, this is produced by a boost circuit. The circuitry needs a relatively high current, typically 10 to 20mA compared with the tenths or hundredths of a mA, or even a few uA  needed to power the movement of the watch.

Some glowing watches use electroluminescence, and this also requires a voltage boost, and a relatively high current to make it work.

Try carefully cleaning all of the contacts including the presser for the light with contact cleaner or alcohol and see if that helps.

This link might also be useful.

 

Edited by AndyHull

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30 minutes ago, HonorPaul said:

Hi there, Ive just purchased a Timex Easy Reader and the indiglo is not lighting up at the 6 o clock position. 

Just wanted you notice that we have a watch repair section for questions, this one should be for  everything but watches so this thread was also posted in the wrong place. 

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Hi   if the watch is working ok it could be that the substrate of the dial is u/s or insufficient voltage is being applied.     This is a thread which has been docmented beforeon the site. Look up previous threads on the subject using the search window. to avoid repeating ourselves.    Cheers

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1 minute ago, watchweasol said:

Hi   if the watch is working ok it could be that the substrate of the dial is u/s or insufficient voltage is being applied.     This is a thread which has been docmented beforeon the site. Look up previous threads on the subject using the search window. to avoid repeating ourselves.    Cheers

    is it posible to find a easy way to locate old threads via subject?   vin

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Most of what you need is in this thread. The one other thing I would check first, If there is a separate pusher for the light, then I would suspect the contacts on that pusher. Try giving it a clean with small drop of contact cleaner. Also make sure the battery contacts are very clean. The high resistance of dirty contacts may not stop the movement, but it may starve the boost circuitry for the EL light. 

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If the search function on this site is not getting you the results you need, try using Google with the "site:" verb. Something like this...

wombat site:watchrepairtalk.com

Substitute "wombat" with whatever you are looking for, so for example

In the google search box type..

timex indiglo site:watchrepairtalk.com

This trick works for pretty much any search term (and of course any site, not just wachrepairtalk.com).

See here for even more google trickery.

https://www.google.co.uk/advanced_search

Edited by AndyHull

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