[weblacky]

Hi aSpartan111,

as per robspierre's feedback, the DS1780 environment chips are known to fail (there are 3 of them on O350 board I believe).

Hence Weblacky offers replacement service: https://forums.irixnet.org/thread-3207.html

If you want to do yourself then you will find that there are quite a few posts providing details of location of chips and replacement tips.

I am pretty sure I posted a picture in one of the post of O350 board and env chip locations (but they are pretty easy to find).

I think one is up near the power connectors (top right in your picture) and a pair between the blue positioning post and the DALLAS NVRAM.

This thread has pics of locations: https://forums.irixnet.org/thread-3424.html and links to a number of discussions on O350 voltage and temp monitoring.

Cheers from Oz,


jwhat/John.

Thanks Jwhat,
I wouldn't have a problem doing this board if you'd like me to but since your location says France I'm assuming it wouldn't be very economical. These actually have better spacing than a Fuel does. So if you're at all handy with soldering, these would probably be easier for someone who is has less experience and less accurate tools actually do the work correctly.

Fuel motherboards are incredibly tight and that's where specialized tools can make or break the entire procedure. This is not the case with your board.

In the case of the board images posted I would say you have a good shot to simply surround the chips with yellow polyimide tape and use something like a chipquik or low melt solder to simply heat up and drench both sides of the chip and gently pluck off the chip with just way too much low melt solder on it.  Then use either solder wick or a desoldering gun to clean up all the excess low melt solder from the pads. Clean the area with isopropyl alcohol and an appropriate swab. Then the next challenge is putting a new chip on and getting it aligned correctly while also not using so much solder that you end up creating bridges between the legs which will short things.

I am normally not a fan of using a hot air tool and so I don't recommend it be used by someone without extensive experience in this case. What I would recommend you do though is go ahead and get a very small iron tip that'll help prevent you from putting too much solder each leg and just put flux on the pads and try to afix the chip as best you can and then touch each leg and try to tack it down with the minimal amount of solder for each pin. Repeat as needed until you have some of it looks good. You can reflow just watch those bridges. I normally use a multimeter and a microscope inspection tool after I solder to help insure no bridges on these chips. They can be pretty deceptive but it's not that difficult. Take your time and keep inspecting before first power on. In this case I think someone has a better shot because you have so much room to work with compared to a Fuel.