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Review title: Unable to get support /answers
Product review: I have now tried three times to get a simple answer from the vendor's tech support, and so far no one has responded to my voice mail messages - apparently you can't get through directly!The article received was not as implied by the headline a replacement for various different models, but was in fact a used version of one specific model (pa-3) which has a different output voltage than the one I am seeking to replace, which is a pa-4. So I have called to confirm whether this will create problems or in fact can be used interchangeably, and if not to arrange for the correct unit to be sent instead.
