Any experience with Simrad BSM1?

[Miller]

I have just got hold of a 2nd hand Simrad BSM1 sounder module but cant seem to get it to work.

I have wired in the power lead and im getting 12v out the end of it but the actual unit doesnt power on.

Any ideas or experience with them?

[ShinyShoe]

You getting any LEDs at all?

Power terminal clean and definately picking up the power?

[Miller]

No LEDs lighting up...12v coming out the power cable but nothing.

All pins look clean with no corrosion.

[ShinyShoe]

Manual suggests the LED would let you know if there was a fault... ...so I'm assuming its a more serious fault! I'd suspect you are into taking the case off and going probing with voltmeter or looking for cooked components?

You tried with the NMEA and transducer removed incase either of them are shorting something?

[Daniel]

What colour wires in the power lead?


Simrad did once upon a one use red for nmea input and black and white for power. Genius.

[Miller]

It has 3 or 4 wires...black, red, yellow and blue...I think the yellow is the switching one

[ShinyShoe]

Since electricity is colour blind... you can never be 100% sure with colour codes.

http://pro.simrad-yachting.com/Simra...51156542,d.Yms

The power lead has 4 pins and is supposed to be black. Pin 1 should be (Black) Ground/Negative supply on battery
Pin 2 (Blue) should not be connected, Pin 3 (Yellow) should be +ve 12V when the ignition is on and Pin 4 (red) should be +ve 12V at all times. Both 3 & 4 need a 3A fuse in them.

Connecting Pin 1 and 3 only will not work, you need 1,3 and 4 connected. 3 and 4 could at least for testing just be shorted together.

[Miller]

Done that, red and yellow both go to positive on a fused switch.

It shouldn't matter that they share the same switch as the simrad plotter?