League City, TX
Hi all- my JP board is hot- burn u hot- down the entire 3w27 row. Is that normal?? If not, what do I check? Thanks
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Data East, 1993
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Creating a new thread is always best. Also, once you get a solution, you should link it to the club.
Those are ceramic resistors you are asking about. Yes, that is what they do. They get hot which is why they are ceramic as they can take heat for long periods of time. This is very normal for them.
Now if one is discolored compared to the others, then likely that would be a failure. Sometimes they can just change a slight color and still measure in spec with an ohmmeter.
Low range, they are 27 ohm. You don't have autoranging? That's usually fine for most things.
I wouldn't worry too much about the spec on those, and if you are replacing with LED's, they won't get as hot.
The J likely means either 2% or 5% tolerance. I just can't find a datasheet at the moment.
If 2%, then it can range from 26.46 to 27.54 ohms.
If 5%, then it can range from 25.65 to 28.35 ohms.
Quoted from slochar:Low range, they are 27 ohm. You don't have autoranging? That's usually fine for most things.
I wouldn't worry too much about the spec on those, and if you are replacing with LED's, they won't get as hot.
Thanks- the whole machine is led. Still blazing
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