Can you post am image of the ic holder and the blank/empty pcb?I received another board (same unsoldered) and I just soldered input pin, connected them to the source. then measured the voltage in resistance pin(of the input) vs different GND point of the circuit. Its ok.. Then I soldered the IC holder (that holds DIP IC, don't know the name) and the same problem!!! so now I just have soldered the input pin and IC holder and even did not place IC. and I can not get the voltage.....What on earth could be the problem with placing that holder. Why without it is fine and with it is wrong.....
Something is seriously wrong with board probably......
I would like to order from another company. But before that I would like confirm there is no issue with design. Can you please check whether my layout is ok or not...
Sorry, don't have blank board anymore....Can you post am image of the ic holder and the blank/empty pcb?
Ofcourse I don't believe the problem coming from that holder! me myself used it many times before.I've used that type of holder before and they don't normally cause any problems so I'm not sure how you could have found a difference in measurements just because you soldered in the holder. This is definitely a clue to what's going wrong though. \it could be your setup rather than the circuit itself. You may somehow have an unreliable measurement method that ls leading you to believe the circuit is misbehaving, find out why the connector make s a difference before moving on as anything else is just a misleading over complication of the problem.