Whats these components!?

[rozeh]

Hey guys,:-D
i have a russian guitar that it has some odd components. i took several picturre of those components and put here untill see. who know what's these two components? look:
first this:
on this component wrote: m10 h90 0381

second this:
on this component wrote: h90 6800

notice: i think they can't be Inductor or resistor(because they have infinit resistant)!

 

[andre_luis]

At first picture seems to be polyester capacitor, and at third picture seems to be wirewound resistor.


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[rozeh]

Maybe capacitor but, not resistor!
as i wrote:

notice: i think they can't be Inductor or resistor(because they have infinit resistant)!

 

[Pha5e]

Maybe capacitor but, not resistor!
as i wrote:

Could be a resistor/inductor gone open circuit i.e. burnt out?

De-solder the component and measure it out of circuit.

Seems as though you have another similar one next to it - measure that component and see if the resistance is around 6.8k Ohms.

 

[andre_luis]

Could be a resistor/inductor gone open circuit i.e. burnt out?

Or even he could be facing to a bad contact to probe meter, because components terminals appears at pictures as presenting some oxidation.


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[Pha5e]

Or even he could be facing to a bad contact to probe meter, because components terminals appears at pictures as presenting some oxidation.


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Lets hope he also tried measuring on the leads too and not just the tag contacts?

 

[hexreader]

The red devices are old resistors.

Cannot help with the green devices - don't recognise them, but I assume that they are capacitors.

The grey tubes are low value capacitors.

This is World-War two technology - nothing special at the time, but looks exotic now.

Last time I saw components like this was about 40 years ago - and they were not new then.

Cannot help with the markings - the devices I saw were simple to categorise, as they were marked with things like 100pF or 120 Ohms (except using the omega symbol - not Ohms)

EDIT: - on second thoughts - I think I see a 10K resistor and a 6800pF capacitor...

 

[andre_luis]

...The grey tubes are low value capacitors...

Are you sure it is not a wirewound resistor ???


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[FvM]

No, it's a ceramic tube capacitor.

 

[hexreader]

Are you sure it is not a wirewound resistor ???


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99.99% certain that these are capacitors. Why do you doubt me?

 

[keith1200rs]

https://en.m.wikipedia.org/wiki/File:Keramikkondensator_roehrchen_IMGP5376.jpg

Keith

 

[Borber]

Both are ceramic capacitors. Tubular has voltage rating of about 500V but green are low voltage 25V, 100nF, H90 is temperature coeficient.

https://www.wasp.kz/articles.php?article_id=631&rowstart=3