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Pin1: 3.3V Pin7: 3.3V Pin8: 3.4V Pin24: 3.3V Pin47: 3.3V Measured without SSD

G'day folks, Got a 2015 13" Retina here that doesn't recognize SSD's. Visually there is nothing wrong with the board that would point to a cause for this issue. Tested several SSD's all have the same issue. Techtool pro DOES show the SSD under SMART check but can't run the test. AHT shows the...

Thanks for the quick reply John. Are none of the options on mouser good/compatible? The source you mention is a dollar more expensive.

Hi folks, I need some backlight drivers but rossmanngroup is sold out (I typically order from there). So I look for LP8550 on mouser and find 3 results, all of which appear identical in their datasheets. https://www.mouser.com/Search/Refine.aspx?Keyword=LP8550 Can I get a pointer as to which...

Thanks John :) And you run it at 60C as well? What can you tell me about smell/using this in a small space?

Hi folks, I just got an ultrasonic cleaner. Crest P1200D-45. Included instructions are limited to the operation of the hardware so I'm wondering if someone here can give me a few good starting points. I got Branson EC, distilled water, ready to mix 5 parts cleaner to 100 parts water and operate...

This 820-3115 came in with no power, history unknown. No liquid damage. or any other kind of damage I can spot. Initially found the PPDCIN to fluctuate slightly. Traced this back to starting point at Q7080. Replaced Q7080 and the fluctuation was gone. Now PPBUS was low at 4volts. Replaced...

And there it is :) Thanks for the help guys. Case closed.

Tested with another screen and no issues there. Problem solved, thanks again! Would still like to understand why/how this interferes with the temp sensors though, could you explain dukefawks ? Really curious.

Alright, will try another screen tomorrow. What’s the logic behind the cam interfering with the temp sensors? Would like to understand it.

So that worked :D thanks John. Wth... From your experience is the display the issue or the connector on the board?

Issue: Mac runs very slow. No drop or liquid damage I'm aware of, board has normal dust but overall looks good. ASD continually fails the palmrest temp sensor test and the CPU thermal test. Fans spin up shortly after boot and stay on high. Tested with different KG trackpads (and their...

Thanks for the replies guys, looks like this one goes back on the shelf for now. Thread can be closed.

- No liquid damage - No drop damage - Minor dust on board - No solderballs found around RAM or other components I can't find any visual issues on this board. U8900 was resoldered as I do out of habit/precaution with these boards. The machine experiences random shutdowns. Powers on fine, POSTs...

Thanks for the replies gents, this one went into the no-fix bin. Case closed.

History unknown but no signs of liquid damage or drop damage to the case. 3 beeps on boot and fan goes 100% within 20 sec. No solder balls around RAM area or CPU area. From another post I read "I just know that 3 beep boards when L7330 has 1.5V are a nightmare." I get 1.5V on L7330... smiba...

1.35V is present. Guess this can be marked as solved. Thanks fellas :)

Not seeing them on the schematic. Assuming I should just go after everything "DDRREG"?

Took a while but got my first retina board with a RAM issue. A visual inspection showed L7710 with half of the top missing (can see inside the coil) and a few solder balls on/stuck to C7714 and C7715. No other visual cues and as far as I know, these backlight parts have nothing to do with the...