Another Autohelm 4000 question..

[kenn]

A good tech should be able to resolve any basic power-up issue

...the control unit does not power-up.

I am not able at this time to buy a replacement or upgrade and if given a starting point, can probably do the repair myself.

Can anyone help? :neutral:

I appreciate that you've already checked the voltage into the unit, but you should still try to find a good local electronic tech and invest in an hour of their time.

I'm an electronic technician, and several years ago I did repairs for a marine electronics store. I generally had little problem resolving basic power-up problems, and with the schematic I could usually get right to the faulty component.

From the manual thoughtfully provided by Ariel, if you look at page 9, upper left corner of the control head schematic, you'll see the 12v input and the 5V regulator (IC 1), and that's where I'd start looking. If there's +5V coming out of IC 1 but the head still doesn't power up, no LEDs or display etc, then there's probably a more serious fault.

Good luck!

 

[rpell1@msn.com]

Many thanks....

That's another fix I most definately need to save.

One of the guys was good enough to hook me up with a Tech at Raymarine. I'm working with him to find the problem. If we are not successful I may ask to "pick your brain" a bit. My electronic training came from my service as a Sonar Tech aboard a Destroyer back in the late 60's......so I am a little "dated".

I appreciate that you've already checked the voltage into the unit, but you should still try to find a good local electronic tech and invest in an hour of their time.

I'm an electronic technician, and several years ago I did repairs for a marine electronics store. I generally had little problem resolving basic power-up problems, and with the schematic I could usually get right to the faulty component.

From the manual thoughtfully provided by Ariel, if you look at page 9, upper left corner of the control head schematic, you'll see the 12v input and the 5V regulator (IC 1), and that's where I'd start looking. If there's +5V coming out of IC 1 but the head still doesn't power up, no LEDs or display etc, then there's probably a more serious fault.

Good luck!

 

[rwitthames]

Hi Dan,

I've been looking all over for the circuit board schematics for the old Autohelm 4000 (Black box version).

A component has burnt out beyond recognition in the top right hand side of the circuit board. I have basic knowledge of electronics and would like a crack at fixing the unit as the motor was working fine before this.

Also, if anybody knows a place I can get this done in UK please let me know.

Thanks in advance

Richard