Look I tried it with the polymer and it gives me continuity in the wire of the + sign with a little leg of the Led and the sign - doesn't it give me continuity, can that be the problem? Another question how do I test the integrated with the polymer if you can explain to me?
you cannot test the integrated with a voltmeter ... the best test is to test it in the insert as it comes from the factory ... with the voltmeter you can test if voltage reaches the integrated pins and the emitting led ... but as I explained the insert and their contacts should be fine ... they have no q. having cut tracks ... that is proven simply with the connected batteries and a piece of lead paper making the contacts where the keys do it .... lastly if it does not work you can buy a new one since they are not expensive .. ..regards!!