Why charger failed

[AK]

This phone charger failed and I would like to diagnose why it failed.

It was running quite warm before it failed.

https://www.dropbox.com/s/7d9hztgdfp9znr3/CellPhoneCharger1.JPG?dl=0

https://www.dropbox.com/s/0cmemsca888ttv2/CellPhoneCharger2.JPG?dl=0

https://www.dropbox.com/s/lhomejqgem4wffw/CellPhoneCharger3.JPG?dl=0

The one pic looks like some component melted and spread that yellowish-brown residue. Is that a problem?

That yellowish plastic board with components on it....is that a cost saving item?

It looks pretty cheap.

 

[Rick C]

On Thursday, May 30, 2019 at 6:27:04 PM UTC-4, AK wrote:

This phone charger failed and I would like to diagnose why it failed.

It was running quite warm before it failed.

https://www.dropbox.com/s/7d9hztgdfp9znr3/CellPhoneCharger1.JPG?dl=0

https://www.dropbox.com/s/0cmemsca888ttv2/CellPhoneCharger2.JPG?dl=0

https://www.dropbox.com/s/lhomejqgem4wffw/CellPhoneCharger3.JPG?dl=0

The one pic looks like some component melted and spread that yellowish-brown residue. Is that a problem?

That yellowish plastic board with components on it....is that a cost saving item?

It looks pretty cheap.

No, the "plastic" board is called a "flex" circuit and in this case seems to be used to get the LEDs right up next to the case I suppose. The brown residue looks like solder flux but may be something from inside a part.

--

Rick C.

- Get 5,000 miles of free Supercharging
- Tesla referral code - https://ts.la/richard11209

 

[AK]

On Thursday, May 30, 2019 at 7:04:09 PM UTC-5, Rick C wrote:

On Thursday, May 30, 2019 at 6:27:04 PM UTC-4, AK wrote:
This phone charger failed and I would like to diagnose why it failed.

It was running quite warm before it failed.

https://www.dropbox.com/s/7d9hztgdfp9znr3/CellPhoneCharger1.JPG?dl=0

https://www.dropbox.com/s/0cmemsca888ttv2/CellPhoneCharger2.JPG?dl=0

https://www.dropbox.com/s/lhomejqgem4wffw/CellPhoneCharger3.JPG?dl=0

The one pic looks like some component melted and spread that yellowish-brown residue. Is that a problem?

That yellowish plastic board with components on it....is that a cost saving item?

It looks pretty cheap.

No, the "plastic" board is called a "flex" circuit and in this case seems to be used to get the LEDs right up next to the case I suppose. The brown residue looks like solder flux but may be something from inside a part.

--

Rick C.

- Get 5,000 miles of free Supercharging
- Tesla referral code - https://ts.la/richard11209

Thanks for the help. One side of the charger did light up when it was working.

Andy

 

On Thursday, 30 May 2019 23:27:04 UTC+1, AK wrote:

This phone charger failed and I would like to diagnose why it failed.

It was running quite warm before it failed.

https://www.dropbox.com/s/7d9hztgdfp9znr3/CellPhoneCharger1.JPG?dl=0

https://www.dropbox.com/s/0cmemsca888ttv2/CellPhoneCharger2.JPG?dl=0

https://www.dropbox.com/s/lhomejqgem4wffw/CellPhoneCharger3.JPG?dl=0

The one pic looks like some component melted and spread that yellowish-brown residue. Is that a problem?

That yellowish plastic board with components on it....is that a cost saving item?

It looks pretty cheap.

can't see any thing relevant in any of those photos. Time to buy a light perhaps.

 

[AK]

On Friday, May 31, 2019 at 5:48:12 AM UTC-5, tabb...@gmail.com wrote:

On Thursday, 30 May 2019 23:27:04 UTC+1, AK wrote:
This phone charger failed and I would like to diagnose why it failed.

It was running quite warm before it failed.

https://www.dropbox.com/s/7d9hztgdfp9znr3/CellPhoneCharger1.JPG?dl=0

https://www.dropbox.com/s/0cmemsca888ttv2/CellPhoneCharger2.JPG?dl=0

https://www.dropbox.com/s/lhomejqgem4wffw/CellPhoneCharger3.JPG?dl=0

The one pic looks like some component melted and spread that yellowish-brown residue. Is that a problem?

That yellowish plastic board with components on it....is that a cost saving item?

It looks pretty cheap.

can't see any thing relevant in any of those photos. Time to buy a light perhaps.

It has two flex circuits in addition to one main board.

The connections are plastic coated. I could test the resistors, but to test any thing else would require scraping off the coating without damaging the copper.

It's not worth the effort.

Andy
Andy

 

On Friday, 31 May 2019 21:13:28 UTC+1, AK wrote:

On Friday, May 31, 2019 at 5:48:12 AM UTC-5, tabby wrote:
On Thursday, 30 May 2019 23:27:04 UTC+1, AK wrote:

This phone charger failed and I would like to diagnose why it failed.

It was running quite warm before it failed.

https://www.dropbox.com/s/7d9hztgdfp9znr3/CellPhoneCharger1.JPG?dl=0

https://www.dropbox.com/s/0cmemsca888ttv2/CellPhoneCharger2.JPG?dl=0

https://www.dropbox.com/s/lhomejqgem4wffw/CellPhoneCharger3.JPG?dl=0

The one pic looks like some component melted and spread that yellowish-brown residue. Is that a problem?

That yellowish plastic board with components on it....is that a cost saving item?

It looks pretty cheap.

can't see any thing relevant in any of those photos. Time to buy a light perhaps.

It has two flex circuits in addition to one main board.

The connections are plastic coated. I could test the resistors, but to test any thing else would require scraping off the coating without damaging the copper.

It's not worth the effort.

Andy
Andy

if you can't show us what the issue is then no.