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NASA MARINE TARGET 2 DEPTH NOT SWITCH ON

Juri

Aug 3, 2016
3
Joined
Aug 3, 2016
Messages
3
The depthmeter Target 2 of Nasa Marine operated successfully on my steel sailboat so far since 2010, but now it unexpectedly does not switch on. Power supply is normal. I ask all those who may concern this problem to post the ideas as to possible reasons of this failure.
Thanks.
 

Alec_t

Jul 7, 2015
3,587
Joined
Jul 7, 2015
Messages
3,587
Welcome to EP!
Without a schematic we're unlikely to be able to offer much help :( .
 

Juri

Aug 3, 2016
3
Joined
Aug 3, 2016
Messages
3
The fuse is OK. DC voltage exists on the red and black wires of the display box and the alarm.
 

Juri

Aug 3, 2016
3
Joined
Aug 3, 2016
Messages
3
Unfortunately, the manual does not include any electronic scheme. I could not find the scheme in Internet. The connection with the board electric sircuit was made professionally years ago and never changed.
 

Sunnysky

Jul 15, 2016
541
Joined
Jul 15, 2016
Messages
541
so no sign of life?
no method of calibration?
damaged sensor?
 
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