davidshanlay

davidshanlay

259	信誉积分
11	解决方案
0	指南
于2015年02月17日注册

投票

A hobbyist or a playboy with broken stuffs so called. I was curious about things since I was little but grew up with negative energy around with no one to support the curiosity. I learnt a few things by takings apart and study them and I haven't seen any mechanic since I was 22 yrs old unless special tools and equipments needed.

Used to dream about making the RC cars as reality electric cars around 1989 and everyone made fun as I am out of m mind to speak the impossible things( when u are yourself with no one to support).

Up to date still trying to build something different but there are simple judgement done because someone speaks with accent, does not have engineering degree and no background to support. Yes I am from a place with the world's longest civil war and conflicts. We managed to educate ourselves in any condition and tried to show the capability.

My suggestion for everyone is "Do not just simply judge a person too soon before there is some adequate time and support given".

Now I am doing Mac repair at component level and it took me 6 months to learn the system as a guy knows "Zero" about computer boards and electronics. I did not even know how to use multimeter when started to learn electronics and relied on the instructions and hard work with consistent. There is nothing you can do if you are determined. Napoleon said :Impossible is the word of fools" and I learnt that when I was 7 years old (I keep it as the most important word in life).

If you are reading it please remember to give anyone a chance to proof or give them a chance. There were a lot of talents lost because of our ignorant view and judgments.

Peace out and hope we could have the peaceful world rather than the mess we are in now.

Live in peace, stand up for the weak, treat with love and stand up for the right cause.

问题

Reprogramming the NAND Flash and device ID on iPhone and iPad 2015年07月25日
I am wondering if anyone has done it. The Apple projected their sales on iPhone over 24Mil device more than before. All I...

问题解答论坛

回答“Compatibility for case pieces between A1278 models?” 2016年08月19日
I have a ton of bodies for those. The 2009 and 2010 has the same body and display. The keyboard is different on late 2011. No, you cannot replace with 2008 because there is none. It is not expensive but you need to be careful with the tiny connectors.
回答“iPhone 6 plus dead” 2016年08月19日
Do not use jewelry cleaner. That is just a joke and do nothing. First remove the shields from the board, then take photo of the board for record if there is any corrosion. -Then ultrasonic with sweeping frequency with contact cleaner mixture heated to 65C and run one minute for each side -After ultrasonic use 99.9% Isopropyl Alcohol to bath the board -Air dry the board -Oven heat to get rid of the moisture with 275F for 30 minutes. Make sure you have some shields on top and bottom as the heater rails do not hear directly to the board. I use plywood on the top and bottom shelves and place the boards on the middle shelf. That way the board is evenly heat up and some connectors don't get damaged. If you do not have proper equipments it is just waste of time and money to try. If on budget, try to buy delrui ultrasonic from China. Good quality with affordable price. Half the cost of name brands with more features. use Branson EC, MG Chemical Alcohol and distilled water.
回答“Voltage inverter, backlight inverter.” 2016年08月19日
I would suggest if you buy another second hand will save you money and headache. The simple answer for the question is The voltage inverter and backlight inverter can be the same where and how the person described the item. As for me, I call "Backlight driver" and the power supply or power control unit for the machine. So I would say it might be the same or different depend on how the person think.
回答“PowerBook g4 has startup chime no image” 2016年08月19日
My suggestion is get rid of that antique box and get a decent one will save you time, money and headache free life.
回答“Difficulty of Repairing Audio Jack?” 2016年08月19日
It doesn't cost much to replace the audio jack. But you need some good soldering station and hot air station (not China cheapo). First, open up the device and see (use microscope not magnifier) if the solder joint at the base of the audio jack are still intact. If intact without breaking out, replace the jack as it might yank the contact inside the jack. If the solder joint is cracked without damaging the pads, just use some flux and solder to get it back. Now it is your call to open up and check inside. Better not to rush and it need patience when working on the small components. Do not worry about static or ESD or what ever. I have been working on the Mac at component level and I don't even use ground wire on my desk.
回答“New Battery not recognized? Bad new battery?” 2016年08月19日
What caused the battery to be replaced? There is battery management system that detects the voltage and control the charging system. I cannot give you exact solution unless there is some more information. I assume it might have some liquid contact to have the battery circuit to become like that or try to unplug the battery and the magsafe. After the computer is off without any power source, push the power button once. 1) Push down the power button 2) Connect the magsafe 3) Release the power button after 10 seconds let the system boot in high fan. 4) Shut it off and unplug the power source 5)Connect the battery and plug in the charger Lets see if it works. I might take a while to get back to the answer but that is a simple way to test or diagnose if there is no liquid contact.
回答“Display assembly for 2015 model” 2016年05月08日
No. It has different backlight rail . I used to sell the whole assembly with $425 on eBay and everyone trying to get lowball bargain and I stopped selling it. Taking to Apple is just waste of money as everything is rip off.
回答“Display assembly for 2015 model” 2016年02月28日
The backlight Pin out is different on 2014 and 2015. They look the same and fit perfectly but the backlight boost circuit is different and pins are in different position than 2014 models. So, if you know how to redo the traces and manually jump the rails that will work.
回答“Adding 4 gig ram” 2015年05月22日
I would say it is possible and can be done with the right tools and equipments. If the bios or EFI does not recognize it there is ways to make it happen. Just down load the EFI hex code and modify it in every step that manages the RAM. I am thinking about to use the flash rams from iPhones and try it since they are all the same architecture and pin out. I hope to get about 2 to 3 days to try different ones.the minimum is going to be 32GB and hope it works when it comes to buffer.
回答“after liquid damage, MBA starts up and then shuts down login attempt” 2015年04月25日
It is over 2 years old question but for others to be able to know what to do if anyone spil their machines. I would suggets if there is no tools handy use the hair dryer. Keep it at low temperature and blow the machine at high flow. Move side to side in sweep to make sure you don't melt something. That is the very first thing that might save the board from damages. If tools are handy I still suggest to use hair dryer if no hot air station while opening up the bottom plate. Pull the battery, disconnect all cables and connector and remove the logic board. Make sure you have 99.9% Isopropyl Alcohol only. Not the pharmacy grade though and get distilled water(sometimes useful). Clean it with Alcohol with a soft brush like acid brush( not pros just for home remedy) or a sofe tooth brush to make sure there is no residue or corrosion remains. Then use a dehumidifier or heater to let it dry out for about 2 days. Then use the oven (not in kitchen) or some heating source to 150F or 75C and let it sit for about 20...

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Mac mini Late 2014 Teardown 2015年03月09日

Even though RAM is soldered to the board, I think it can still be upgraded by desoldering it and replace with new ones.
Mac mini Late 2014 Teardown 2015年03月09日

I have seen a few question about the role of 8904C-F chip. So far as my knowledge, it is temperature sensor.
MacBook Air 13" Mid 2012 Display Assembly Replacement 2015年02月17日

You did exactly as the instruction means you might mess up the board. There is about 20 steps you can skip just to change assembly. I will buy your dead mac and take the diodes and resistors from the board.
MacBook Air 13" Mid 2012 Display Assembly Replacement 2015年02月17日

There are a lot of extra steps not required to access display assembly. It make people think like rocket science and some might screw up their mac.