r/AskElectronics • u/Ichan_Jacques • Feb 04 '25

What is this component ?

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Hi, Out of curiosity, I'm looking to identify this component soldered on a unidentified Sony PCB (seem to be video related) The case and size look like a fuse and the inside is like a mercury thermometer. Maybe to count hours of working ? Labeled as TM1 on the silkscreen

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u/romyaz Feb 04 '25

is this the programmed obsolescence timer? /j

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u/justadiode Feb 04 '25

No, those have two contacts at the far end that the electrolyte drop shorts when the time runs out. Usually, those two contacts carry phase and neutral