I have an instrument cluster from a car that was submerged under water for a period of time. I am looking for this component but not exactly sure what it is just yet. Thoughts?

 

It's a surface mount crystal. It's also hermetically sealed, so being underwater doesn't hurt it.

 

I wondered if it was a crystal but didn't see any frequency marked on it? Is that not rust surrounding the crystals? Could be proprietary.

 

As other writers, it is a Crystal or XTAL and they are closed air and waterproof.

I would desolder the XTAL, carefully remove the black plastic spacer, clean PCB, spacer and XTAL with some alcohol and then assemble it all again.

 

It may be worth taking it off the board carefully and cleaning both the crystal and the PCB. Those rust deposits could well stop the oscillator.

Oh, I see Kjeldgaard just beat me to it

 

I can assume the rust is from the can. Too bad they didn't make it out of stainless but then again I don't think engineers thought the car would become a submarine either.

 

I wondered if it was a crystal but didn't see any frequency marked on it? Is that not rust surrounding the crystals? Could be proprietary.

Like most automotive modules, the actual part number or value of the component is masked.

 

Like most automotive modules, the actual part number or value of the component is masked.

Yes I was pretty sure of that. I will fire it up and see if I can measure it on board. It is working right now but just wondering for down the road. Just trying to find all the stuff on this board that didn't like being submerged for a period of time. Steppers, transformer, inductors etc. Always fun

 

Yes I was pretty sure of that. I will fire it up and see if I can measure it on board. It is working right now but just wondering for down the road. Just trying to find all the stuff on this board that didn't like being submerged for a period of time. Steppers, transformer, inductors etc. Always fun

If the submersion was in clean, fresh water, most parts will only need to dry out.

 

@SLK001 I get the feeling you have not seen the inside of many flooded modules or flooded cars in general. In theory you are right but unfortunately with cars you will never have that type of best case scenario of dunking it in water and then opening it up and letting it dry. Cars are already very hard to dry out, on top of that most auto's that have been flooded sit for months before being worked on do to the way insurance works.Some even sit for year or more waiting at auction.

 

I have had my share of flooded vehicles so I am good with what to look for. There will also be no warranty on this after it leaves my bench. It is sure to fail down the road. I was surprised though at how good it came out for a flooded vehicle. Definitely not clean water

 

@SLK001 I get the feeling you have not seen the inside of many flooded modules or flooded cars in general. In theory you are right but unfortunately with cars you will never have that type of best case scenario of dunking it in water and then opening it up and letting it dry. Cars are already very hard to dry out, on top of that most auto's that have been flooded sit for months before being worked on do to the way insurance works.Some even sit for year or more waiting at auction.

I meant the electronic parts. I wouldn't even consider trying to dry out a car. A lot of places clean PCBs after fabrication with water. I once worked at a place where they put finished boards in a dishwasher with detergent to clean them. It worked quite well.