Please help me to find out USED HOUSEHOLD/ELECTRONICS market in Bahrai

Unfortunately I don't think you will find a "one-stop-electronics-shop". I have been looking for certain devices and some things just are not here. Sharaf DG, Radio Shack, etc will have pieces but I am not aware if there is a central store to get everything - and a lot of specialty devices have to be outsourced and shipped.

But as always, it depends on what you want.  You can get a TV, computer, stereo, random cables, and a PS4 at Geant or Lulu.  At some point it may be wisest to put together an order out of country and have it all shipped at once to minimize cost for items not readily available here. There are some stores in Saudi that have a lot more available to you, for instance.  Some items I have had shipped from the US because cost and shipping was still cheaper than costs here.

Best of luck to you with what you're searching for.