Minelab Sovereign GT schematic

[kt315]

hello, I try to fix a board... after some masters... on circuit ground is abnormal +10V.
can anyone give me a full part name of this IC? it is I believe 'linear technology' but I find nothing on LT805.

tia

[golfnut]

its a comparator



http://www.linear.com/product/LT1011

s

[kt315]

thank you Golfnut. I changed TL062, did draw a part of board thinking it is power supply, but did not fix up. can anyone give me a vector?

[kt315]

hi Sean and folks,

I found the problem. it was a solder short of a phone pad on ground board copper pouring, ie +5V on +12V, if reference is
-BATT. what I made... I connected a power supply directly on the main board, ie without the panel board disconnected.
then the ground voltage did stand normal +5V. this did give me a concrete idea that the problem is in the panel board...
later I will draw a schematic of GT power supply...

thank you very much for help

all the best

[kt315]

a solder short of pad R or L but at back side of the pcb.

[kt315]

I made new patch on back side of housing, because late made not mine was crude.

[kt315]

as promised... done... sov power supply schematic...

[kt315]

My sovereign gt was working great, then
Turn on power it would sound if turning on and off in quick sequence,
Now when you turn it on just a quick threshold then nothing.
This is with either battery pack ( charge or AA ).
I have dismantled the unit and check for the obvious.
Nothing burnt, boards good,connections and pots meter out good.

What I need is a schematic, or test points, or ideas.

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