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Going for a longshot here. This board is a chitu e10 lite off a resin printer. While diagnosing another issue and actually successfully fixing it I stupidly unplugged the 24v supply to the board forgetting it was on. What has now happened is the board is unresponsive. I had a little feel and did some diagnosing and this specific component labelled U16 gets very hot when I supply 24v to the mainboard. In an effort not to fork out money I have been trying to find this component online but there’s no mention of it anywhere. The component has FV4RWR etched on it. I assume it’s some kind of IC but I can’t figure out what type. Is there any way to identify it or test some values. There is another identical one on the board. I have also recently found a marking underneath the component that looks like --G-.
Any help is appreciated.
Welcome to the DigiKey TechForum.
I was unable to find anything for these markings.
Maybe one of the engineers can offer some idea of what the part may be.
U is a generic designator for an IC chip so U8 and U16 just mean it’s a integrated circuit type of chip. The marking of the actual part is what we would have to go by to find what it actually is. However, I also found nothing with that marking FV4RWR. That package is 5-TSSOP, basically same as package SC-70-5 and also goes by SOT-353 package style. This package is very common in a lot of SMD devices but we know it’s an IC from the U marking on the board. It leads me to think it might be some kind of voltage regulator or maybe a memory chip, hard to say since that part marking does not correspond to much anywhere. Perhaps someone else might know more about this.