Recent content by posarah

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    820-3437-B No charge light PP3V42 present

    Yes C7125 is in place and reading fine. Sorry typed, yes I meant L/Q7130. Everything at the top immediate area of the isl is reading ok as is the left side. I’ll go through the rest tomorrow.
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    820-3437-B No charge light PP3V42 present

    L3170 pin 1 .138 pin 2 .138. Q3170 pin 1 .138. c7125 pin 2 .137. All values are diode mode. Looking around the ISL immediate area will report back once completed, just thought I should do these first as Q3170 was originally the issue so likely is the issue again. Removed C7105 again as it was...
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    820-3437-B No charge light PP3V42 present

    Replaced the TPS51980 as it did look a bit suspect. R7105 is not blowing anymore is it looks like it was R7190 causing the issue. ISL is getting hot now so yay gotta order some more ISLs. This time I'll order more than two....
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    820-3437-B No charge light PP3V42 present

    Ah that explains why the ISLs keep dying then. R7190 has always been there. This was your typical ebay " don't know what's wrong with it we haven't touched it" listing, so they have obviously tried to repair it and saw it was not listed as no stuff and placed it there. Curious that it's not...
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    820-3437-B No charge light PP3V42 present

    No I saw R7113 just thought that line should be higher than that. I did, I didn't note it down though. When I replaced all the components on the R7105 pin 1 side and replaced the ISL last, I re checked all the components surrounding the ISL on each of the ISL pins to make sure nothing was...
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    820-3437-B No charge light PP3V42 present

    Ok I replaced C7105 and R7105 again and tried the second ISL and same thing again. Pin 1 on R7105 has 16V pin 2 nothing. C7105 nothing on both sides. U7100 pin 1 at the test pad is 5.46V. Pin 3 is no longer reading short, looks like it was the ISL again causing that though I replaced all 3 on...
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    820-3437-B No charge light PP3V42 present

    Pin 2 on U7100 is 0.449 with C7105 and 0.445 without. Thanks, I'm using 330pf for c7116 till my extra donors arrive. R7105 is reading 23 ohms when it is a 10 ohm resistor and was reading 10 ohms when I installed it which is weird. If it was blown you would expect it to go a lot higher than just...
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    820-3437-B No charge light PP3V42 present

    I'm awaiting more ISLs, I think the ones I got are dodgy and R7105 has blown again twice with these "new" ISLs. I used a 10 ohm is the power rating important? I used a 1/16 10 ohm as it was the closest I had to the 1/10W 20 ohm. I've buldozed the whole ISL section and replaced everything and now...
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    820-3437-B No charge light PP3V42 present

    Ok I reflowed the whole ISL area & I replaced C7105 again. I used r7700 on my 3437 donor as a replacement for R7105. pin 1 R7105 is now reading 60K ohm .445 diode mode. Same on pin 2 of R7105. Removed F7140 C7140 voltage is 0V. The battery is not plugged in though, that should only have voltage...
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    820-3437-B No charge light PP3V42 present

    Thanks I do have some 4.7 ohm so I'll use that for now. Yes C7105 was changed, though it was from a donor board so it may of been damaged though it did not read short nor does it now. Is it worth changing the mosfet Q7155? I was always taught when changing fets you should always change the pair...
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    820-3437-B No charge light PP3V42 present

    ISL is still getting really hot, and looks like R7105 is blown again. Not as much as before though, now it's only gone up to 70 ohm.Pin 1 on R7105 is reading OL. Replaced D7105 now pin 1 on R7105 was reading but I didn't note it down and now when I go to measure it jumps between .367M and OL...
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    820-3437-B No charge light PP3V42 present

    Ok U7100, C7125 and Q7130 have been replaced. Pin 1 on U7100 is now reading 330K ohm. Resistance between pin 17/18 is 3 ohms and resistance between 27/28 is 19.8ohm.
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    820-3437-B No charge light PP3V42 present

    Looks like I've got another dead ISL. Checked all the components around it and they all seem fine. Checked which pins do not go to components in the area and checked them and there also fine. The only one which is short is ISL pin 24 CHGR_UGATE pin 1 of Q7130. Confirmed on two donor boards...
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    820-3437-B No charge light PP3V42 present

    Something on the ISL line most be shorted as the ISL is now getting really hot when it was not earlier. That explains why the original failed, but none of the immediate surrounding components are reading short nor getting hot only the ISL itself.
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    820-3437-B No charge light PP3V42 present

    Yes PP3V3_S5 Is steady 3.33V. Yes board has only been tested on the desk nothing plugged into the board, besides the DC in board obviously. Everything else is either removed from the board, or did not come with the board as this is a ebay "untested" job. PM_PWRBTN_L is 3.41V steady. 0.357V...
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