Why does this MagLite not work?
After removing the rubber button, an allen wrench loosens the Assembly, to then slide out from the Tube/case.
The On/Off switch works when connecting 3VDC Plus to A and Minus to B.
When the Assembly is installed in the Tube, it all works when connecting 3VDC to that A point (via a long screwdriver) and C (the rim of the Tube).
I even confirmed that there Is continuity from D (which Does press against the battery when assembled) and E.
The batteries Are good/full.
I cannot figure Why it won't work when put together.
?
Mark578
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Is the bulb showing continuity?
из honakrisi
@honakrisi
Continuity? Maybe I don't understand your question.
When the switch is at On, the bulb lights and stays lit.
из Mark578
I suspect one of the following might be the case:
・The continuity state changes when the unit is assembled and pressed (between D and E, or at point A).
・There is a specific point where continuity between E and C degrades when the screw is tightened.
из mura mura
OK, I checked the Continuity of the bulb.
Yes, there is continuity between the two contacts on the bulb.
из Mark578
Further confusion:
With a Universal Power Adapter, output set at 2.85 VDC (and the voltmeter confirms that), connected at A and B, it works.
It takes quite a bit of pressure to screw the rear cap onto the Tube
when the Assembly and batteries are in (putting it all together),
so I thought that maybe there's too much pressure on A
(some broken connection Inside the Assembly?),
so I connected the Universal Power Adapter 2.85 VDC,
pushing Very Hard on A. It still works.
When the two batteries are lined up together, a voltmeter shows there is 2.94 VDC.
Add the Assembly (not inside the Tube) to that line, so A is touching battery #1 Plus, and a piece of wire from battery #2 Minus to B: it does Not work.
I've tried using "Panasonic Super Heavy Duty C" batteries, and "Eveready Classic C" batteries; none will work.
My conclusion so far: this thing won't work, even using GOOD batteries.
But it does work with 2.85 VDC from another source. WHY?!
из Mark578