820-00165-A - Only works when IOBoard Flex is disconnected.

[gcain]

Tried with multiple ioboards, flex cables and all combinations in between.

If it starts up (without flex) and I connect the flex (while running) we get a green/orange light. But the board won't start when flex cable is connected.

Jacks on both ends look okay.

With flex cable connected, we're missing PP5V_S4RS3.

 

[dukefawks]

Check SMC_LID with attached cable.

 

[gcain]

With flex cable removed;

SMC_LID = 3.3v

It's the same with it connected.

 

[dukefawks]

Are you 100% sure using the correct year flex and board? Not plugged in the flex in reverse? Inspect connector on the board for corrosion?

 

[gcain]

I am 99% sure, it's an 821-1722 in case you happen to know the part number off hand.

 

[gcain]

Board starts up fine with a battery connected.

:/

 

[dukefawks]

That is the correct cable. Are you plugging in this cable the right way around?? Also getting a green/orange light without the cable is impossible.

 

[gcain]

There is no light with the flex disconnected, only when connected.

Board works fine, with flex connected, if battery is connected too.

 

[dukefawks]

Acok pulled low when flex connected?

 

[gcain]

SMC_BS_ACOK at R5187 is 3.3 with and without the flex cable connected.

 

[gcain]

Just had another board identical to this one come in.

They only work with my 85w Mag Safe 2 charger for some reason.

85w Magsafe 1 with adapter won't start it.


Best part is it came from another shop that tried to charge the customer $1,800 for a new board.

 

[DannyRinc]

Having the same issue, found a solution?

 

[MOberdick]

I also had this problem last week. making sure a known-good battery was plugged in at the same time fixed the issue but it wouldnt work off of just the charger for some reason.

 

[gcain]

I found the 820-00165 will only work off a Genuine MagSafe2 adapter, and not a MagSafe 1 with a little converter on it.

 

[DannyRinc]

Is that post liquid damage? I've found the same thing (which is super obnoxious) but I want to verify that it's not the liquid damage having done something to make magsafe 1's not work.

 

[larossmann]

Just use the proper charger!!