Batterys corroded clean up contacts now unit does not power up
Jenko, How bad was the clean up of the battery contacts, lot of corrosion? Now
it possible to have broken wire to the battery compartment.
If you are mechanical inclined and have some experience with electronic. Here
what you do. Remove the front lens. There will be four screws on a concentric
ring. Remove the screw and the ring. This unit comes apart in the approx middle.
Also, from the front end look for a white Teflon ring with one screw it goes
around the image intensifier tube. Remove the screw this will allow the image
tube to ability it to move back along with the rest of back frame Be careful
here all the wire are white Teflon coated ,all the same color. These wires are
HV, and are rated at 2KV with small current. There's a battery tube on the
upper right of the back housing. Lots of wire that go to the two switches. Take
a pick and gently remove some of the rubber trim cement that was used. The only
wire to be concerned about is the ground wire. The positive wire you can see
from the back of the back frame housing. There is a aluminum ring that is
threaded for the battery cap. Now there is slot cut into the battery tub just
under the aluminum threaded ring, you can see the wire. This is the positive
If you don't have the room, remove the plastic cover over the on/off and IR
witch cover. There will be six little screws under the plastic cover, remove the
screw and the back plastic switching component can be remove the from inside.
Make sure all the cement has bee remove.
It is really critical here. take some wire indicators tags. make a picture of
the printed circuit board and every where a wire is attached put a tag on the
wire and mark the location on the your diagram where that one with its tag is
locked. Your are going to find that there are many ground wires to different
shielding plates. I can't says it enough, mark those wire and its location on
the printed circuit boards
If you need to remove the green image intensifier tube. There a wire teflon
cap and cover that goes the voltage multiplier around the image tube. Just
gently pull down the white cap, and turn it inside out. Take small pick and
remove dielectric jell from inside the cathode. One the jell is removed, then
gently pull on the white wire and it will pull out about 3/8 of inch. The
plier ignitor wire is solder to the cathode wire, desolder it. All components
then can be laid out.
Check for broken wires. send me another message and I will tell you
components to check and how to fire the cathode ignitor. stewbison.
Aug 04, 2011 |
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