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Help finding value of burnt resistor.(lemmy.nz)

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WaltzingKea@lemmy.nz
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askelectronics@discuss.tchncs.de
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Mates bread maker stopped working so I had a look inside and saw this burned resistor.

I’m guessing the heat changed the colors a bit so wondering if anyone has experience in reading cooked resistor values.

I removed it from the PCB and measured it at 403 Ohms.

Thanks for any help.

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pneumapunk@lemmy.sdf.org
2 points

Only thing I can think of, maybe it’s a bleeder resistor for that cap, and it failed by some kind of internal short which reduced its resistance (and increased its heat dissipation hence the blackened board)? But fails-short is an unusual failure mode for a resistor and 1 GΩ is pretty high even for a bleeder, so maybe we’re misreading something.

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rstein@discuss.tchncs.de
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It got really hot and the colours changed.

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pneumapunk@lemmy.sdf.org
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Yeah, I think you’re right.

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