What is actual diode mode to ground reading at 3V3_G3S?
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A2289 - 820-01987 5V
- Thread starter mushr00m
- Start date
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You should find the culprit injecting 3-4V.
Find a good thermal camera...
Find a good thermal camera...
How can "YOU" adjust the amps???
The Ohm law has any sense for you?
I told you to set PSU amp limit to max FIRST.
The Ohm law has any sense for you?
I told you to set PSU amp limit to max FIRST.
You CANNOT adjust the current injected in the MLB.
Adjusting the voltage, AUTOMATICALLY changes the current consumption.
You MUST set PSU current limit to max just to prevent PSU blocking, in case the actual voltage will cause higher current.
Did you set amp limit to max???
What is current consumption with 4V applied?
Adjusting the voltage, AUTOMATICALLY changes the current consumption.
You MUST set PSU current limit to max just to prevent PSU blocking, in case the actual voltage will cause higher current.
Did you set amp limit to max???
What is current consumption with 4V applied?
I repetead several times already.
Set PSU limit to MAX; 3A in your case.
If you really get 1A/4V, that means 4W of power dispated as heat; enough to detect something (at least a litle bit) heater than rest of MLB.
Of course, thermal camera helps a lot in such case.
"Consumption is around 1A when I am shortening to ground PP3V3_G3S"
I don't understand what you mean.
Why would you that?
Set PSU limit to MAX; 3A in your case.
If you really get 1A/4V, that means 4W of power dispated as heat; enough to detect something (at least a litle bit) heater than rest of MLB.
Of course, thermal camera helps a lot in such case.
"Consumption is around 1A when I am shortening to ground PP3V3_G3S"
I don't understand what you mean.
Why would you that?
I had thermal camera in the past and didn't think useful.
Also I am using thinner instead of alcohol but it showed really well U6855 getting hot and drying the thinner itself. After removed this IC nothing else got HEAT.
I will set to 4V/3A and check all of the rest
BY THE WAY
I removed U6860 and also the short still on the board
and I put NEW U8200... now we do not have short betwenn S-D only on PP3V3_G3S
Is it ok to inject 4V with the removed U6860 and soldered new 8200 in the board?
Let me know before I proceed with 4V/3A
Also I am using thinner instead of alcohol but it showed really well U6855 getting hot and drying the thinner itself. After removed this IC nothing else got HEAT.
I will set to 4V/3A and check all of the rest
BY THE WAY
I removed U6860 and also the short still on the board
and I put NEW U8200... now we do not have short betwenn S-D only on PP3V3_G3S
Is it ok to inject 4V with the removed U6860 and soldered new 8200 in the board?
Let me know before I proceed with 4V/3A
You can inject directly; supposing that new U8200 is not shorted.
What is the exact ohm value of that short?
You can probably find the culprit injecting voltage there.
You can probably find the culprit injecting voltage there.
Inject voltage and see what heats up.
PLEASE, stop setting the current manually on the PSU.
I can't remember how many times I told you to set amp limit to MAX; as first step.
Missing basic electronics knowledges is a nightmare.
And personal training is not the goal of the forum.
PLEASE, stop setting the current manually on the PSU.
I can't remember how many times I told you to set amp limit to MAX; as first step.
Missing basic electronics knowledges is a nightmare.
And personal training is not the goal of the forum.
You can go up to 2V...
An IR cam should show something heating; maybe just a bit more than the rest of the board.
2V/2A generates 4W; 6W for 2V/3A.
I recommend to lower the voltage, to keep the current bit lower than 3A; PSU may enter into protection (at 3A) and may not inject anything then.
2V/2A generates 4W; 6W for 2V/3A.
I recommend to lower the voltage, to keep the current bit lower than 3A; PSU may enter into protection (at 3A) and may not inject anything then.