SMD component identification

[peepermeeper]

Hello I need help identifying these what I believe are SMD resistors labeled R22 and R23 how does one go about finding what these are without a schematic is it just by size. I don't think I can accurately measure them since they are malfunctioning? Noob here.

Thank you

 

[peepermeeper]

I believe the dots on top are just air bubbles in the conformal coating

 

[peepermeeper]

Should I also replace the component labeled 620 since they share a trace ?

 

[ramondo]

FIRST,,,, what type of unit are we looking at?
Second ,,,what symptoms are you having?
Then what makes you believe these two items are bad?

Not trying to be snide but its like:
" What is this item labeled rxxx Oh sorry camera bad and no picture"

We will be glad to help if you meet us half way.

 

[peepermeeper]

Its is a BMS for a onewheel xr
the one wheel will not power up and flashes a code related to issues with the BMS this is after a modification to the battery where I believe the PCB received a impact force directly on those two components
I believe they are bad because they heat up instantly to scalding hot when powered in situ also in the picture it seems to me as if they have a excessive heat discoloration

FIRST,,,, what type of unit are we looking at?
Second ,,,what symptoms are you having?
Then what makes you believe these two items are bad?

Not trying to be snide but its like:
" What is this item labeled rxxx Oh sorry camera bad and no picture"

We will be glad to help if you meet us half way.

Does my picture not show up ?

 

[Pommie]

I can see your picture but it's blurry.
SMD resistors normally have three numbers, the first two are actual values and the third is the number of zeros to follow (power of 10).
So the resistors marked 620 are 62 followed by no zeros so 62 ohms.

If you can get a clearer picture it would help.

Mike.

 

[Diver300]

Resistors rarely get too hot because they have failed. It's usually something else that causes a resistor to get too hot. Also resistors can run hot enough to hurt your finger without them being harmed.

I guess that there would be some other problem but it is difficult to know.

 

[Pommie]

What was the modification?

Mike.

 

[peepermeeper]

It was a cbxr battery upgrade which has a history of bms problems due to it's very tight ever so slightly sketchy install since they fit I think 15 extra cells over the stock battery in the same housing

 

[Pommie]

Can you rewrite that in English that I (m66) can understand?

Mike.
Is tight a technical term I don't understand?

 

[peepermeeper]

Physically restrictive. Basically the battery is at the very limit of the housings capacity

 

[Pommie]

So physically tight but does the battery have more voltage/capacity?

Mike.

 

[peepermeeper]

It has the same voltage but more capacity I think~200 Wh