2915 and 2914 GPU with green dot

[G.Beard]

Every time I get a board in that has a GPU with a little green dot on it, the BGA site solder mask is always raked to shit. They are always a pain in the arse.
Thing is, plenty of boards have been worked on already and they dont have that green dot and they are usually alright.
Any idea what's going on with the dreaded green dot boards?

 

[dukefawks]

Green dot on the RAM slot you mean? They are Apple refurb boards and are just always a nightmare.

 

[G.Beard]

Green dot on the RAM slot you mean? They are Apple refurb boards and are just always a nightmare.

Green paint dot on the GPU substrate by pin one. These boards are always a total shit.

 

[dukefawks]

Never seen that. If it is Apple refurb there should be no serial number on the RAM slot.

 

[G.Beard]

Never seen that. If it is Apple refurb there should be no serial number on the RAM slot.

Maybe it's a UK based service. The green dot I assume is there to mark pin one which is fucking stupid in itself. Always scraped solder mask.
I am familiar with the removed SN and green sticker on the under side of the RAM slot.

 

[dukefawks]

If there is no edge bonding then that would be possible.