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I am using the CH341A programmer but I do not have the circuit board to solder the chip on to. You had me once before go to PCBway.com to order the WSON-8 setup. Where can I find or order this so this chip can be read? Also, I know this is a 1.8v chip, anything I need to do to make sure the...
I forced it in to DFU mode, had no problem in doing so, but getting to step 4 of 4, the progress bar stops at the last word, then it gave me this exact same error both times while trying to do the revive (see image). The customer has files that are not backed up so cannot try the restore. Which...
My reference only: TT10011
Issue: Screen is not producing picture, no external video either.
History: Very small amount of corrosion found at TP: GPU_CLKREQ_L_R (just below C1951), I did not at first think the corrosion was touching anything except the metal casing on the board. I ended up...
I took up all the capacitors for PPVBAT_AON_CHGR_REG, and I also cleaned up Q5240. Now I have a consistent 5.1v at C5250.
I however still get nothing @ R5330. The power is not stepping up.
P3V8AON_PWR_EN is 0v.
R5150 I get 1.9v.
SYS_DETECT is 0v.
I did have to remove J5150 because it broke off.
I placed them all back. including the fuses F5200/1. AUX_DET I get a consistent 1.3v.
One area I have been looking at is SYS_DETECT which has 0v, It doesnt give me anything either when first pluggin in to power via USB-C.
I do get around 3.0v on R5150 pin 1 but it flucuates up and down.
I am at...
Its was not stable, it was going from 1.6v to .900v and it would continue this cycle.
Since I have removed Q5265 trying to isolate this problem and now I am getting a stable 1.325v on pin 3 (CHGR_AUX_DET) of Q5216.
Q5265 pin's 1, 2, 3, and 4 are all now cycling that same 1.6v to .900v.
I also...
I got voltage on the other side both before and after removing RH006 when using the USB-C charger on the other side of the board like you said. The voltage is cycling from 1.6v to .900v. I still have the two fuses removed F5200/1.
F5200/1 has been removed, and I replaced U5200 yet again. I got 5.1v going in but again R5215 pin 1 gets that 5.1v too, yet pin 2 get 0v. I am certain I am having some kind of a problem from the Magsafe connector having touched something. Where else should I be looking?
0v on R5330.
C5277 gets...
I just swapped UF400 with a new one. No change. PPVBUS_USBC5 is not getting any power to U5310. Not sure if this matters.
Also, Q5240 when I was reflowing this, I am getting varying voltages from this. Would this affect my problem?
U5300 pins 3 and 4 are 0v.
So I have been removing those resistors 1 at a time, and sticking them back on. I am not sure what exactly I should be looking for. So far, When I removed RH006, I got 0v, then I stuck it back on, and I get the 3.4v. When I took off RH007, I still got 3.4v regardless of it being on or off. What...
I did not realize you sent the above message, so in the interim I had removed F5201/00 and noticed Q5240 was fluctuating different voltages everytime I reflowed it. Especially pin 4. I don't remember the measurements from yesterday as I did not write them down.
Next I will work on removing the...
This is what I ordered from Digikey, can you tell me if this is the same thing?
https://www.digikey.com/en/products/detail/diodes-incorporated/DMN5L06TK-7/1964685
Now I am not so certain. All this started around the time i tried replacing this part from what I remember but may have been the...
Yes, 5v in. I have swapped U5200 out a few times. I wonder if the Q5216 I got from Digikey is messing with anything.
P_IN= 5.1v
AUX_DET= 0v
SMC_RST_IN= .063v
EN_MVR= .827V
AUX_OK= 0v
CHGR_AMON= .061
CHGR_BMON (RD580 pin 1, I hope this is correct, the boardview I have looks slightly different in...
Stable 5v all the way to the U5200 to C5223, and R5215 pin 1.
I get .63v at test point P3V8AON_PWR_EN,
PPBUS_AON is showing .045v. I have not been successful at all with getting power here except for once in the very very beginning.