Hello,

I have a problem with a Romoss powerbank which I bought. It was working very well just few days ago, I stopped charging my device and would not charge itself instead, a part of it heats up very much.

I opened the powerbank to see if I could do the fix. I noticed when I plug the Powerbank in AC, there's this small IC (IP1689) that heats up very bad and when I read the Input Charging USB port Negative and Positive with a Multimeter to check resistance, it beeps which means they are bridged together. Then I removed the IC from the PCB and the bridge stopped but with no resistance. I can not find the part to order or get support from the manufacturer.

I would like to know if there is another way or jumper to work around the IC to make the Powerbank work.

Thanks

(Attached is the image of the PCB and the Part)

 

Hello,

I have a problem with a Romoss powerbank which I bought. It was working very well just few days ago, I stopped charging my device and would not charge itself instead, a part of it heats up very much.

I opened the powerbank to see if I could do the fix. I noticed when I plug the Powerbank in AC, there's this small IC (IP1689) that heats up very bad and when I read the Input Charging USB port Negative and Positive with a Multimeter to check resistance, it beeps which means they are bridged together. Then I removed the IC from the PCB and the bridge stopped but with no resistance. I can not find the part to order or get support from the manufacturer.

I would like to know if there is another way or jumper to work around the IC to make the Powerbank work.

Thanks

(Attached is the image of the PCB and the Part)

Can you find a manufacturer's logo on the chip?

 

Yes, I can! Should I post the image?

 

Here is the zoomed image of the part and the details extracted!!!

Please help!!!

 

This is a custom IC part probably the system on chip, therefore no datasheet available.

 

You can try to find matching IC here
http://www.injoinic.com/english.html

 

Thank you @Jony130 I have checked the link but didn't find the IP5189 but I have mailed them my problem and asked if they could help me as an end user!

Is there any other thing I can try should they not agree to provide any help?

Thanks again!!!

 

Hello , I didn't get a reply from Injoinic concerning my problem! I was thinking they didn't want to give out the part. What else can I try please? I need the Powerbank working. It's very expensive to just let go.

 

If the manufacturer won't help you, then nobody can....

 

Couldnt get the datasheet of IP5189 but a similar one is IP5207 which is also in QFN24 package...


Allen

 

Thanks @absf

How do I go about it please, would they have to agree selling the IP5207 to me or there's something I can do with the datasheet?

Thanks.

 

Hello please were you able to look for the ic

 

Thanks @absf

How do I go about it please, would they have to agree selling the IP5207 to me or there's something I can do with the datasheet?

Thanks.

 

Hello please were you able to look for the ic

No I wasn't. Sorry this came late.

 

Hello,

I have a problem with a Romoss powerbank which I bought. It was working very well just few days ago, I stopped charging my device and would not charge itself instead, a part of it heats up very much.

I opened the powerbank to see if I could do the fix. I noticed when I plug the Powerbank in AC, there's this small IC (IP1689) that heats up very bad and when I read the Input Charging USB port Negative and Positive with a Multimeter to check resistance, it beeps which means they are bridged together. Then I removed the IC from the PCB and the bridge stopped but with no resistance. I can not find the part to order or get support from the manufacturer.

I would like to know if there is another way or jumper to work around the IC to make the Powerbank work.

Thanks

(Attached is the image of the PCB and the Part)

If there were a way to make the system function by means of bypassing that IC, certainly the producers would have used that method of making it work.
Thus, bypassing the IC will not provide the similar operation, but we have no hint as to what functions will be missing.

 

If there were a way to make the system function by means of bypassing that IC, certainly the producers would have used that method of making it work.
Thus, bypassing the IC will not provide the similar operation, but we have no hint as to what functions will be missing.

I think that chip is a main Powerbank module and supports the QC protocol which there are other models from the same manufacturer which doesn't.

I scrapped it a long time ago as I couldn't get the chip.