Macbook Pro 820-00840-a not powering on

[mon2]

Re: Macbook Pro 820-00840-a not powering on

I would just apply ample flux and use a wide tip on the soldering iron and attempt to nudge it with tweezers, little at a time. With enough heat, the part should start to shift, little at a time. Heat up one side and then the other - heat will also travel through the part but work quickly and you should be able to remove it.

On my wish list are a good pair of the soldering iron tweezers but there may be better tools out there.

Do not even use the hot air at all. Try this idea first.

Alternatively, blow the air in the opposite direction -> towards the edge of the PCB and away from the plastic connector. That should also work out ok.

A bonus if you can apply an aluminum foil shield over the connector or polymide (kapton) tape over the sensitive areas.

[Simplebeans]

Re: Macbook Pro 820-00840-a not powering on

I would just apply ample flux and use a wide tip on the soldering iron and attempt to nudge it with tweezers, little at a time. With enough heat, the part should start to shift, little at a time. Heat up one side and then the other - heat will also travel through the part but work quickly and you should be able to remove it.

On my wish list are a good pair of the soldering iron tweezers but there may be better tools out there.

Do not even use the hot air at all. Try this idea first.

Alternatively, blow the air in the opposite direction -> towards the edge of the PCB and away from the plastic connector. That should also work out ok.

A bonus if you can apply an aluminum foil shield over the connector or polymide (kapton) tape over the sensitive areas.

Hi mon2 I had to retreat back to the tranches again for this one and restrategise, the J6602 connector got me pickled, I think the hot air for this one was a no go because of it. So I restrategised to try this, I applied ample flux as you suggested and took some solder (lead free) and applied a small portion to the soldering iron, whilst on I then started to apply the soldering iron on the side away from the J6602 connector. And voila, after some swiping back and forth on one side the capacitor just popped off! Can you see the issue, see below for the image? HAHA.




The side shown on the image was the underside of the capacitor so this was not easily visible on the board when testing. Injecting voltage was the revelation.


Measured again the resistance to ground (black probe to ground point and red point to F7000 PIN #2) and short gone!

I don't suppose mon2/anyone here has a C6405 spare capacitor laying around for sale? I do not have any donor board so I do not have one immediately available. It is a 22uF/20% tolerance/25V/0805-1 (X5R-CERM).

[mon2]

Re: Macbook Pro 820-00840-a not powering on

Good job! Would not have guessed this region to have the bad cap.

https://uk.rs-online.com/web/p/mlccs...citors/9159303

will work just fine for your logic board.

Any chance you have a VAT # ? If yes, could drop ship it from Arrow.

Update - wait! They want to charge what for these parts ?? Hang tight...

Wow - the parts are pricey. This part will not be missed to be honest.

You have some options:

1) if you have a VAT# - could drop ship it to you from Arrow (free shipping)
2) source them from RS Electronics but they are over priced (in my opinion) - we buy these in high volumes and see a totally different price structure - 'free' shipping (buried in the price)
3) leave the part off - doubt it very much if you will hear a quality difference on the amplifier if the part is not present
4) would consider to ship you some but the Canada Post fee to you is more than the parts are worth so best to source it locally
5) Digikey & Mouser are possibly good choices but then you have to pay for shipping

[Simplebeans]

Re: Macbook Pro 820-00840-a not powering on

Good job! Would not have guessed this region to have the bad cap.

https://uk.rs-online.com/web/p/mlccs...citors/9159303

will work just fine for your logic board.

Any chance you have a VAT # ? If yes, could drop ship it from Arrow.

Update - wait! They want to charge what for these parts ?? Hang tight...

Wow - the parts are pricey. This part will not be missed to be honest.

You have some options:

1) if you have a VAT# - could drop ship it to you from Arrow (free shipping)
2) source them from RS Electronics but they are over priced (in my opinion) - we buy these in high volumes and see a totally different price structure - 'free' shipping (buried in the price)
3) leave the part off - doubt it very much if you will hear a quality difference on the amplifier if the part is not present
4) would consider to ship you some but the Canada Post fee to you is more than the parts are worth so best to source it locally
5) Digikey & Mouser are possibly good choices but then you have to pay for shipping

Hi mon2 thanks for all your suggestions, i tried a couple of places online including Digikey & Mouser and they were all really pricey so i just went ahead and ordered one from eBay, the ebay seller is still not local to me, they are located in the EU but its the best price and delivery lead time that i could find. I really do need to order an assortment of capacitors so i have them on hand for futrue, which is on my next list of things to do.

mon2 thanks for all your help so far and i will be reporting back in once the parts are flown in and have installed them.

[Simplebeans]

Re: Macbook Pro 820-00840-a not powering on

Hi mon2 thanks for all your suggestions, i tried a couple of places online including Digikey & Mouser and they were all really pricey so i just went ahead and ordered one from eBay, the ebay seller is still not local to me, they are located in the EU but its the best price and delivery lead time that i could find. I really do need to order an assortment of capacitors so i have them on hand for futrue, which is on my next list of things to do.

mon2 thanks for all your help so far and i will be reporting back in once the parts are flown in and have installed them.

Hey mon2 i replaced the C6405 capacitor and what da ya know i put it all back together and ITS WORKING! I appreciate all your help mon2 on this one.

Admins can you please mark this one as solved so that others can have a go if they experiencing the same issues. And as always anyone else with similar issues to this or questions about anything discussed therein drop me a PM or post here and ill be more than happy to help.