Raymarine C70 replacement (same connections)

[want2cruise]

My Raymarine C70 screen finally decided to take a permanent rest and I am looking for a replacement. I am trying to find the same unit on ebay, but would also consider other Raymarine units, as long as I could use the exact same cable connections. anyone know if the C80 and/or other units could be used? I am not too concerned about the difference in size, but do not want to change the cabling.
Thanks for any input!

[noelex 77]

Before you fork out money for a new one the 70 has a common problem with the screen where the connector becomes unseated.

Its not a difficult repair.

I am looking for some photos that I took of one I repaired 6 months ago. I am happy to give you some help if you want to have go.

[noelex 77]

Ok here is a photo showing the most common problem.

This circuit board (unfortunately the very bottom one)connects to the screen and often pops out of its mounting.

[want2cruise]

Thanks for the suggestion. what was initially an easy fix was fixed by an incompetent 'specialist'. it worked for a while, but the housing was not properly sealed and filled with water. hence a lot of corrosion on transistors etc. am still trying to get t fixed, but may be beyond repair... so while waiting for that I wanted to start looking for a lucky ebay moment, just in case a unit sells cheaply...

[noelex 77]

Originally Posted by want2cruise

Thanks for the suggestion. what was initially an easy fix was fixed by an incompetent 'specialist'. it worked for a while, but the housing was not properly sealed and filled with water. hence a lot of corrosion on transistors etc. am still trying to get t fixed, but may be beyond repair...

Yes that sounds terminal. I would be looking for a new unit as well.

Sorry I cannot help with the original question, I suspect they are the same (they were on the RL 70 and 80 units), but I have never paid enough attention to be sure.
Someone on CF will know.

[Bob S]

Hello everyone! Sorry to dig up an old post but google searching a fix for my C70 brought me here.
Noelex77
I remember seeing a lengthier post but couldn't find it. I really appreciate your photo. I just finished removing the PC boards and removed the small circuit board with the bad connection. I tried lightly bending the pins on the connector in a little hoping to make a better connection. Everything is reassembled and looked pretty clean. I don't have a power cord to check it with. I'm not sure if I can jump the three pin power cord to fire her up in my office.

My question is "how long did this fix last"? I wish they used a ribbon connector instead of the hard connector. I would think this could be a reoccurring problem.

Thanks
Bob S

[noelex 77]

The fix concerned was for a friends plotter, so I don't know if it is still going.

I am not sure what causes these connectors to pop out. A knock, temp change?, but it seems a common problem. Once pushed back in I suspect they will last as long as they did originally. If it was an ongoing problem I think you could probably secure the connection a bit better with cable tie or similar.

Rather than throwing away electronics that are uneconomic to repair professionally it is worth opening them up and taking a look. Even if you know nothing about electronics you can pick bad solder joints and loose connectors just by looking carefully. The other tip is try pushing on components gently with a wooden (non conductive) match or skewer.

Only do this sort of thing if you are going to throw the unit away anyway and don't play around with units that can generate high voltages.

[amytom]

I followed these tips back when they were written to fix the random color bar screens I was getting. All is well so far. Definitely worth trying.


Sent from my iPhone using Cruisers Sailing Forum

[Bob S]

I appreciate coming across your fix. This was an intermittent issue until last season when I lost the screen entering a narrow inlet in the dark for the first time. I wanted to test it before I put it back together but don't have a plug. The boat is on the hard with the batteries removed. Again, thank you foe the fix!



Sent from my iPhone using Cruisers Sailing Forum