Question about Tasco NV200W Monocular

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Unit will not turn on. Changed batteries. Batteries became hot

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For batteries to get hot they must be in a dead short situation.

Have you put batteries in the wrong way around before you have realised and then put them into the right positions

If the power circuit of the monocular has not got reverse polarity protection you can short out components which will give you the problem you have now.

Only solution is to get someone to take the board out to see if it is cooked

Posted on Jun 23, 2009

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Hi,

It is very possible that the terminal of the positive end of the bottom battery is shorting to the battery's body hence the heating up. If this is the case, then when you charge the radio, excessive current is flowing since the battery set has one shorted. Again this would cause heat buildup specially on the bottom battery and the charging terminals.

A possible solution is to check the bottom battery's positive terminal and ensure that it only contacts with the positive terminal of the battery and does not touch the battery body (which is negative).

Alternately (and perhaps more to your advantage), seek replacement of the defective unit considering it is new and therefore should be under warranty.

Hope that this be of some help/idea. Pls post back how things turned out or should you need additional information.

Good luck and kind regards.

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