Comments on: Finding a Short on PP_VCC_MAIN on a No Power iPhone https://www.microsoldering.com/finding-short-pp_vcc_main-no-power-iphone/ Microscopic Board Level Repair Tue, 15 Aug 2017 09:08:12 +0000 hourly 1 https://wordpress.org/?v=6.9.4 By: Inspiraattori https://www.microsoldering.com/finding-short-pp_vcc_main-no-power-iphone/#comment-607 Tue, 15 Aug 2017 09:08:12 +0000 http://www.microsoldering.com/?p=341#comment-607 In reply to Michael Huie.

Thank you for the answer and information Michael, I appreciate! Nice to learn new things 🙂
Can you say about iPhone 5c not charging (no charging bolt) and it draws 0.09-0.11 amps. I’ve already changed tristar two times and still the same about 0.10 amps. Board looks good tho :/

]]> By: Calin Gabriel Costea https://www.microsoldering.com/finding-short-pp_vcc_main-no-power-iphone/#comment-601 Sun, 13 Aug 2017 18:45:40 +0000 http://www.microsoldering.com/?p=341#comment-601 Thank you so much Mike for answer me !! Respect !!

]]> By: Michael Huie https://www.microsoldering.com/finding-short-pp_vcc_main-no-power-iphone/#comment-600 Sun, 13 Aug 2017 18:38:15 +0000 http://www.microsoldering.com/?p=341#comment-600 In reply to Inspiraattori.

PP0v95 is a low resistance line. According to Ohm’s law, I=V/R and max current on this line is 3.3A, which means that it’s a low voltage, high current and low resistance line. R= V/I = .95V/3.3A = .28 ohms. Don’t assume that a shorted cap means that the circuit is shorted. There are lines that are supposed to be low resistance. PP0v95 is supposed to be low resistance.

]]> By: Inspiraattori https://www.microsoldering.com/finding-short-pp_vcc_main-no-power-iphone/#comment-599 Sun, 13 Aug 2017 18:12:26 +0000 http://www.microsoldering.com/?p=341#comment-599 Hello. Do you know what causes iphone 6 PP0V95_fixed line to short? I have removed backlight sircuit and now I noticed that this PP0V95_fixed is shorted. This is second iPhone 6 when this line get shorted and I have used freeze spray to find shorted component but nothing gets heated up when put current to that line. Any ideas? Thanks

]]> By: Calin Gabriel Costea https://www.microsoldering.com/finding-short-pp_vcc_main-no-power-iphone/#comment-376 Wed, 17 May 2017 05:17:47 +0000 http://www.microsoldering.com/?p=341#comment-376 Hello Mike
Please tell me what is pp vcc main in words because i am very new in this 🙂
Thank you from Spain!
G.C

]]> By: Howard https://www.microsoldering.com/finding-short-pp_vcc_main-no-power-iphone/#comment-251 Tue, 21 Mar 2017 06:25:45 +0000 http://www.microsoldering.com/?p=341#comment-251 Nice job. I don’t have steady enough hands anymore or the equipment and materials for this. Do you offer mb repair services?

]]> By: Mike https://www.microsoldering.com/finding-short-pp_vcc_main-no-power-iphone/#comment-85 Wed, 21 Dec 2016 18:01:52 +0000 http://www.microsoldering.com/?p=341#comment-85 In reply to Sakaijunior.

That’s a different line, so you will need to see what is connected on that line.

]]> By: Mike https://www.microsoldering.com/finding-short-pp_vcc_main-no-power-iphone/#comment-84 Wed, 21 Dec 2016 18:01:16 +0000 http://www.microsoldering.com/?p=341#comment-84 In reply to Orin.

You can see all of the equipment that I use in the Tools and Equipment link above.

]]> By: Sakaijunior https://www.microsoldering.com/finding-short-pp_vcc_main-no-power-iphone/#comment-83 Wed, 21 Dec 2016 03:57:36 +0000 http://www.microsoldering.com/?p=341#comment-83 Nice job. I have a question. Is it the same way if the phone get shorted on pp_vcc_batt?

]]> By: Orin https://www.microsoldering.com/finding-short-pp_vcc_main-no-power-iphone/#comment-26 Wed, 05 Oct 2016 03:13:02 +0000 http://www.microsoldering.com/?p=341#comment-26 Nice work. Question: do you do any reballing and if so what reballing or rework station do you use?
I’m opening a shop in the Cayman Islands in a few months and looking to buy some equipment

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