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03-14-2014, 11:18 PM   #1
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IST DS Battery nonrecognition

HI IST DS will not recognize Batteries even after cleaning the contacts TIA what else can I do ?


03-15-2014, 02:18 AM   #2
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QuoteOriginally posted by downunderman Quote
HI IST DS will not recognize Batteries even after cleaning the contacts TIA what else can I do ?
Find out whether the batteries, the charger, or the camera is the culprit, of course.

Even if only one of the cells does not deliver enough current under load the moment the camera is switched on, the package will be rejected. During this moment the camera is draining an extremely high current for a very short time. To help this, there are capacitors on the main board which can add to that current for a fraction of a second (I think they are connected to the batteries all the time, even if the camera is switched off). If they are faulty, the camera may become VERY selective about batteries. In this forum there is somewhere a thread with instructions how to add additional capacitors between battery compartment and main board.

But in most cases the reasons are one bad cell (may still have the correct voltage, but can't deliver the needed current anymore), bad/dirty contacts in the loader, or a faulty loader.

Try other batteries, and another loader.

If you use a loader without processor controlled loading separately for each cell (delta U/I), one bad cell can prevent the other cells from getting properly loaded, too.
03-15-2014, 03:39 AM   #3
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Thanks for the reply RKKS08, I bought a new pack of Batteries AA does not make any difference.
03-15-2014, 06:29 AM   #4
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QuoteOriginally posted by downunderman Quote
IST DS will not recognize Batteries even after cleaning the contacts TIA what else can I do ?
The following thread will give you the reason and the solution to the battery problem:

https://www.pentaxforums.com/forums/6-pentax-dslr-discussion/13335-ist-dl-batteries.html

03-15-2014, 07:26 AM   #5
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There is a small possibility it is the main switch.
Inside the battery chamber there are 2 screws. They pull the 2 sections of the switch together, hence they control the contact pressure.
Try this: loosen them by 2 turns but don't remove
Rotate the switch a few times then retighten the screws but not overtight.
03-22-2014, 05:14 AM   #6
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Thanks for all the input/ suggestions, I bought some lithium Batteries Pressed various buttons whilst turning on and off success at last
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