Autopilot Raymarine ST2000+ repair. Let's use general electronics knowledge and figure the schematic

[@z_actual]

the ribbon cable attaches to a device called a fluxgate compass, an electronic compass if you like. These autopilots attach to a boats tiller, and when you turn it on, the fluxgate compass locates the boats relationship to a north south heading. You push a button to locate your course, and the control arm of the autopilot moves in or out to adjust the boats rudder tiller to the setting you turned on to. Attaching both ends, one to the tiller and the other to the boat steers the vessel along. The device is more complicated than it might be because it can *also* work in conjunction with a device known as a chart plotter. Thats basically a geo located screen which shows you electronic maps, and with both devices you can set up GPS located way points to plot a course. These things are very expensive to buy, but cheap builds. Moisture destroys them from the inside and they are poorly sealed. All that and, the gears which move the control arm are plastic, and wear out.

[@Brianck1971]

Great use of google mate.

[@z_actual]

@@Brianck1971 I had an ST4000 on my last boat, the ST2000 is the lesser, and tiller only version to that

[@Brianck1971]

@@z_actual Of course you did m8.

[@wackey2k10]

@@Brianck1971 You're a great help brian, thanks for your useful input. Pat yourself on the back.

[@Brianck1971]

@Virmana How do I do that ? Hold on I'll google it.

[@liquidus2172]

9:55 If you pay close attention you can clearly see those connector labels on the PCB (DATA, 0V, and 12V).

[@NvArya]

Yup

[@kytkinlevy]

You really are professional Mr. Sorin. Years ago You was my enthusiast and still are. I have learned from you so much. Now I run my own microsoldering business in Finland. Thank you so much.

[@Denise_in_progress]

Maybe there's a broken wire from one of the pins that connects to the board ,plus or minus in the black cable? That other thing on the back is a gyroscoop working like a compass

[@josepeixoto3384]

thanks,is there still a fluxgate compass in the circuit or no?

[@IFIXCASTLES]

I would check all wires from connector to board with continuity testing. And jiggle the connector to see if a connection failed.

[@Drottninggatan2017]

Exactly. Could be a broken wire. Might even be a fuse inside the connector.

[@HoppyStar]

I couldn’t help thinking this once Sorin said it’s working! Maybe he did it off video?

[@sussymcbuttertits5035]

Agree !

[@DanielsGameVault]

9:50 is where I caught a glimpse of the writing on the board between the pins where it says 12v clear as day and from there on I spent the rest of the video SCREAMING at you through the screen ! :)))))

[@ralfselektronicrepairchann4237]

Thanks for the video. You can see the print at the PCB where 12 V is at 9:52 on you video.

[@RetroClaire]

Think I would have checked continuity from the plug. There was actually markings on the board saying 12V, 0V, Data could see on your microscope.

[@oussamaassal5588]

Check the cable continuity , and that moving thing is a compass/pondule To to capt the waves and how the boat is moving

[@josepeixoto3384]

thanks for explaining that about the waves,never thought of that; (it's pendule or pendulum)

[@rodsco357]

The word is Compass. You Sir are a wizard with electronics, I watch all of your videos. I have a degree in electrical engineering technology and I have learned a lot from you. Thank you, for sharing your knowledge!

[@nixxonnor]

The connector has 12VDC plus and minus, NMEA Data plus and minus and SeaTalk Data plus and minus. The thing dangling below is a fluxgate compass. Be careful when assembling not to pinch any ribbon cables or run a screw throug the ribbon cable

[@christopherj3367]

It did say on the PCB what each wire was for, UK/EU standards wiring colour brown for plus and blue negative. compass was the word you looking for.

[@Vander-from-zaun]

sorin check the wires going from outside to inside maybe from flexing some of them is damage and is losing connection when moving

[@OnStageLighting]

You think this electro-mechanical one is crazy, wait until you hear about a wind vane that autosteers using just the wind and nothing else. They really are crazy!

[@benzyblenaru9602]

I would check the continuity of the cable at the entrance And the cable shoes that don't look good Maybe there is corrosion

[@Karthor.]

4:30 a gyroscope? just a guess Edit: 9:56 you could had figure it too by looking at the silkscreen

[@AntAlves]

Hello! Check with the fluxgate compass connected, it may be shorted and making the board not to power on.

[@rickoneill4343]

Why didn't you check the cable and pins in connector? The line can have a break.

[@filips_p9510]

Hi. You probably have a reverse polarity protection with N-Channel Mosfet in GND. So no beep between - 12 and board GND!

[@ctecrwp]

You should have checked the intrtface cable for any breakage.

[@Skarz289]

Sorin it was written on the board 12 V next the brown wire

[@carlosgarciaoropeza5480]

After reading the comments of the colleagues and watching your video, probably but still with extreme reservation I would venture to review one. (5:37) In your browser: mouser electronics and once inside please type: switchcraft circular connector 6 pin and then choose images. On the other hand, I hope that no airplane pilot is watching you (they would like to send you their automatic navigation devices😊). Thanks for sharing. All the best.

[@traditionaltools5080]

The two L shaped ICs in the middle are voltage regulators. Positive and negative. The case to ground regulator is negative. They do use lots of components on the "ground" line because its not ground. Generally some of the heavy lifters are shorted, open current sense/ feedback resistor, shorted diodes, etc. It can even be as simple as a bad electrolytic cap. It doesn't take long to do a quick test of all the typical failure components. Broken wires and connections are common issues too. If it all works then there's a short on the load side of the cable.

[@dolfink2799]

Did you check the cable from the adapter to board?

[@orion310591RS]

10:08 - Yea, but if you go deep in SMD color markings, you realize some colors overlap, like some capacitors and some resistors, or some capacitors and some coils. So its easy to make wrong conclusion. 20:50 - Maybe that black cable is broken, sometimes work sometimes not, or not at all, you powered device straight from pcb. Obviously some data is going there. 21:45 - Gyroscope.

[@shaunmorrissey7313]

Compass not gyroscope

[@srul76]

Sorin. Can it be a cable open? Did you check there is short between the plug and the board?

[@digihorse6730]

Love your videos Sorin but i have to yo agree with the comments. You can see under the microscope the that all the connections are written on the PCB I think you missed it. But the video clearly shows that. I also agree 100% it almost certainly a cable break, or a problem with the multi pin socket the plug goes into. Good luck.

[@Skarz289]

Sorin Maybe just maybe it was the cable maybe you should check the cable pins with the board to make sure the cable is working ( connectivity )

[@MorDreadful]

Sorin's LOL always gets me. Best "LOL" on KZbin.

[@dirindirin3983]

9:50 that's not a carbon resistor. That's a ferrite in order to remove EMC.

[@StewartCroft]

With high impedance ? More likely a varistor

[@tina-vl7ow]

at 10:00 the marking on pcb show 12v

[@electronicsrepairschool]

lol, indeed

[@ElectroWorkshop-]

There was markings on the pins/ wires

[@Drottninggatan2017]

It says "12V" on the board. And possibly VHF on the other connectors.

[@thomasunsworth425]

9:39 in under the microscope, yellow is DATA, blue is 0v and brown is 12v ...... it's printed on the board, So I expect all the spade connection points will be marked on the board. Could be a problem with the cable, the plug on the end of the cable or whatever that plug goes into which supplies 12v to this control unit.

[@ignacio6425]

Did you check the cable in continuity mode

[@force4200]

Can the Brown cable be damage inside to the connector ?

[@AmerRimireZ]

Thank you for sharing New device more to learn

[@humayankabir8267]

Waw, It's great.. I have learned many things from this video. Thanks.

[@esbenarndt5703]

You should have taken the plug apart to be sure all connections are ok. People tend to pull those plugs out with to much force

[@andytipping70]

could the issue be a broken connector in the cable to the mother board? that way - customer would say its faulty but you started testing at the board - not the plug?

[@Djarum_]

I have seen a few sail boaters on solo trips use an autopilot. Compass is maybe what you were looking for.

[@SidneyCritic]

Needs more tape over the buzzer hole, ouch that's painful for my tinnitus. Isn't it always broken wires.

[@manuelpentinga9312]

No Bios problem this time.....

[@mosfettg6857]

Hi sorin great video as usual, i looked this thing up and there is a manual available online with the circuit diagram included.

[@billalad1633]

i think you can take a chip and search for datasheet maybe you find a pin to play current

[@Crystalservices]

Hi sorin❤

[@nalleholm]

wires from connector to the board test for continuity

[@jyrkiunhola5181]

Similar autopilots for boats has been around for some 30 years :-)

[@SY-tx5hb]

Why no check cable continuity?

[@esbenarndt5703]

The tiny wire go to the fluxgate compass

[@Franklinveterinarycenter1of4]

love your enthusiasm; some of the comments are brutal......Hey, my money is on you.

[@Swenser]

In Australia. Colors for ac is brown live and blue gnd. So I'd guess as you found . Brown is plus. Blue is gnd.

[@electronicsrepairschool]

There is no AC, only 12 DC which any normal manufacturer it will use red and black

[@anthonydenn4345]

@@electronicsrepairschool Probably didn't want to get the motor wiring mixed up with the power input colours. Or maybe that cable comes from some household AC application. Those colours are for AC wiring not DC, strange.

[@carlosgarciaoropeza5480]

@@anthonydenn4345 Yes. Completely agree. These are the wire colors authorized to meet standards for electrical installations here in North America (black HOT, white NEUTRAL, and green/yellow (combination) for GND). They are mainly required in hospitals, schools, government facilities, etc., and require authorization from the power company in the relevant country. In this world trade environment, all you need to do is check inside the device which colors were used (hot, neutral and ground) and take them into account when making our measurements. All the best.

[@carlosgarciaoropeza5480]

@@electronicsrepairschool Yes. Red positive, black negative (common) for DC applications. Another way of saying it, a convention that all manufacturers abide by. Even in cheap applications like USB keyboard and wired optical mouse it is true. All the best.

[@geovani60624]

whenever I get a device that I don't know to fix I check for simple problems first like broken wires, broken buttons etc... first

[@hugoegon8148]

17:35 congrats to figure it out that the brown one is plus. If you had look to the pin name at 10:00, you had seen "+12V". LOL. 😂

[@stephencarter6360]

"Compass" was the word you were looking for

[@WeaponOut]

Darn, was hoping there was actually an electrical component issue to be fixed given that my ST2000+ just got fried from a poor wiring connection on its power supply from my boat and I was hoping to benefit from this vid. 😂

[@WeaponOut]

Turns out that just like this one, mine was fine. Redid wiring in boat from PO and it works again.

[@esbenarndt5703]

If you look carefully you will find text on the pub at each leg

[@Bogdan.Benett]

Neata!

[@ljubopobric5385]

you did not see there is on PCB, every wire have label, 12V, 0V, Data....

[@melhoor1]

It is already writen on the board which is 0 an wich is 12 volt.

[@Bogdan.Benett]

It's called a compass

[@kpelectronics]

That black thing looks like a coil for me and not a carbon resistor

[@QARepair]

"how you can fix something like that?" 😅

[@καΝενας-δ6λ]

i have fix the same model in the shop i work u need a magnet to test it

[@καΝενας-δ6λ]

yeah geolocation with a magnet in the antenna you can test the pilot and the bar moving even with a magnetic screwdriver

[@καΝενας-δ6λ]

marine staf has seperated ground

[@καΝενας-δ6λ]

like car audio amps yellow with blue together

[@καΝενας-δ6λ]

aaaaa mf sorin no the not make it unrepairable hahaha the are writing on board the polarity

[@καΝενας-δ6λ]

tip usualy the cable to the motor cuts of check it

[@bucsadanmihai]

Onboard vessels there is no ground!....

[@Maciej.R.]

Piny za na płycie opisane. Widać na filmie.

[@fendularatsq2317]

compass

[@petejackson7976]

Compass

[@bryanleon1436]

Gyroscope

[@frankmormando3917]

gyroscope

[@dogosrobi]

There are bigass BLUE and BROWN wires going from the main connector to the board and it takes you 20 minutes a figure out what is live and neutral? Really? Really?

[@stavros9969]

compass🧭

[@dandapanipathak5616]

Brain damage manufacturers 😅😅

[@wimcolet]

😂 what's do you say. Don't take shortcut. Testing your power supplying always first. Who know kabel are bit dodgy ore salt buld😂

[@Onkel.Moetrik]

Youre amazing... you take apart a device without testing it or knowing how it works or what the problem is??? one minute on the manufactors website and you would have the connectors pin out, and you would know what a fluxgate compass and a NMEA interface is. Im sorry to say it, but you are far away from being a professional..... you waste your time....

[@silviuguseila2552]

A bit hursh. It is always a good idea to google any device/component for schematics and information, but Sorin is doing a lot of unedited videos.

[@Onkel.Moetrik]

@@silviuguseila2552 I stand by my statement. Sorin concluded that it was the customers set up that was faulty, but he has absolutely no grounds for saying that. He applied power on the pcb and did NOT test the wire or the plug?! That is sloppy craftsmanship no matter what way you slice it... On top of that he did not fully test the device simply because he didn't know how the device should work. The headline is Repair school. Can you honestly say that there is any valuable information to learn in this video? All I see is i sloppy, randomly poking with a multimeter without any plan or purpose. After 45 years of repairing and troubleshooting I'm really not impressed..

[@badeadrian]

Busolā...in English Compass 🧭...

[@joeanon1415]

Compass