Question re Case Screws on HDS7

AussieDon · Post by **AussieDon** » Fri Feb 01, 2019 2:07 pm

My HDS7 sonar-GPS is out of warranty and has a problem that could be caused by moisture ingress into the electronics. I intend to open the case and then seal the unit in a heavy-duty plastic bag along with a bunch of silica gel satchels, in an attempt to fix this problem myself.
I have been unable to find a bit-driver to fit the heads of the many small screws that clamp the unit shut. It looks like a Torqx type screw head and I presume it may be an obscure Imperial/US size that is difficult to source in metric countries like Australia. I have approached Lowrance in both Australia (where I live) and the USA but no answer was provided to me.
So, my question is - can anybody tell me just what the bit-driver is that I need to open up my HDS7?
Any assistance much appreciated.
AussieDon

Ken Sauret · Post by **Ken Sauret** » Fri Feb 01, 2019 9:57 pm

I would not open any Lowrance unit unless it is a throw away unit and you are just curious. Call Lowrance anyway and see what, if anything, they can do. You may be surprised.

AussieDon · Post by **AussieDon** » Fri Feb 01, 2019 10:14 pm

Here in Australia, we do not enjoy the service levels typical of the USA.
I have talked to Lowrance and they were of no help. Their only response was to offer me a discount on a new unit, if I could find the original paperwork and receipts.
Having paid around AU2000 for a unit I used half a dozen brief times, and never got wet, I am once-bitten and twice-shy, as the saying goes. Browsing the web leads me to believe this Lowrance unit, at least, is prone to absorbing ambient moisture.
It is essentially a piece of junk now. My pulling the unit apart and trying to dry any insipient moisture poses no risk at all.
cheers
AussieDon