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Still the same: Temperature (Ts0P) Skin 0 Proximity ERROR --1 (Unable to Read Sensor) Just a little confused about what component that actually is. Thanks for any help. Not too many sensors I'm seeing. I'll just start testing them while I wait. :(

After watching Louis' video on this same subject I guess I should use the OS ASD. Ok I'll come back with that info.:rolleyes:

The issue is that the computer boots it just runs real slow.

[SOLVED]820-3023 -Sensor TS0P Skin 0 failed ASD test. Need to know what component that is? So ASD guide says that the TS0P is on the MLB and is a temp sensor. The ASD test says proximity though. So of the thermal/proximity sensors I have to to choose from on page 47 of the Schematics, how do...

Wow. Thank you so much.!!

ok. thank you

Hey gang, not too confident yet about what part to buy. The part is VCC U7940 74AUP1G3208 SOT891 There is a pic below so you don't have to open a schematic. Here is what I have found on mouser.com http://www.mouser.com/Search/Refine....rd=74AUP1G3208. I'm just a little hesitant to pull the...

No Title this is the schematic of the part. U7940 on 820-3023 Macbook Air

Can anyone help verify the part that I will now need to get because I got the component to hot too many times. Hey I did what I planned on doing which was practice not pulling pads off and finding out how much heat these components can take. I took it off and put it on about 5 times so lesson...

dukefawks Really!! I was running it off just the power supply (85w) without battery, just to practice my micro soldering skills transferring component without frying it etc. So running with no battery can cause the slow down? Thank you for your thoughtful insight.

OMG duh! Just like every other freaking part on the board. Ok I need sleep. You are the man SOLVED! I replaced this part from a working board and now the computer boots buts is soooo slow at everything. The put it back on working board ( fyi this is just for practice ) and now working board...

aprendiz Thanks for the help but unfortunately I need to know what pad is what on the actual part. I have the boardview and Schematics just cant figure out what the actual pins are on the part. I hope looking on the top of the actual part will clue me in. Thx bro!!

Hey there is a "-" symbol and a "0" symbol. Each above a pad. Could this mean ground for "-" That would be cool.

Like an idiot I forgot which way the U7940 goes on the logic board. I "smartly" took a picture in HDR and realized that it was not in focus to see the lettering on top. I've looked up the part ( I hope ) here http://www.mouser.com/Search/Refine.aspx?Keyword=sot891 .... doesnt give me much help...

Hey Duke thanks again for the help. My mom can't wait for me to fix something so that I'll move out of her garage. I'm turning 40 this week so........ anyways the whole damn board was hit with a firehose. No really it was from a fire. It didn't get hot and there was no black marks on it. The...

PPVCC_S0_CPU does "seem" to pulse between .0v and .01V.

Oops posted before I refreshed the page. Cpu Vcore Rails Is PPVCC_S0_CPU , correct?

I see from another post where 5V_S3 rails are missing that U7200 was shorted to ground. Now I know that this board is not that board and who knows what's shorted but should I be looking for a certain rail that's shorted to ground? Thanks so much for your help Duke. I feel like this board is...

I don't have a scope but I can see the voltage move from 0V to .01V in a pulsing pattern. Sorry for not having a scope that's my next purchase.

Hi thanks for all you help. I tested F7140 and I get 12.53V for PPBUS_G3H.