Help identify component

[madan1]

Can anyone identify the yellow component S1. It has two legs, one of which is connected to the component's body and has no writings on it.
When the board is shaken, something in the component rattles.
The board is RTI t2-c smart remote control ( I could not find a service manual ).
The component is in what seems to be the "power supply" part of the board.

[budm]

Re: Help identify component

Tilt ball switch.
https://www.adafruit.com/product/173...BoC4UAQAvD_BwE

[madan1]

Re: Help identify component

Helpful as always! Thanks budm!

"The "poor man's" accelerometer!" in a $800 smart remote control... fu%k logic.

[Retro-Hipster]

Re: Help identify component

I think the logic is pretty sound on their part...

cheaper parts = moar profit. lol Joking aside, if we are just talking something to register simple movement so that the remote lights up/turns on, then that is probably a pretty smart choice on their part..

Helpful as always! Thanks budm!

"The "poor man's" accelerometer!" in a $800 smart remote control... fu%k logic.

[madan1]

Re: Help identify component

Here is another one - the thingy in the red circle.
It measures ~7700 ohms resistance.
It is on the main battery voltage rail and when shunted, the device starts fine.
Don't mind the lousy solder job above the thingy.. it was just for testing purposes and already has been fixed.

p.s. the thingy was measured out of the circuit.

[R_J]

Re: Help identify component

It is likely a fuse, any letters on the ends (ie: bel) or maybe a number under it. digikey etc. carry them

[madan1]

Re: Help identify component

It looks like it could be a fuse

That was my first thought... but don't the fuses fail by breaking the internal connection?
This one still has some resistance.. that's why I'm confused.
For now I have installed a 0 ohm smd resistor and the device works works fine ( kinda... looks like it needs a professional calibration or/and new sensors ). I do not see any excessive current drain or hot components.

edit: no markings at all - not on the component, not on the board.

[R_J]

Re: Help identify component

It depends on what the fuse element is made from, since there is no short on the board, it might just be fuse fatigue, the fuse element over time got weak and finally opened, but there is still a small amount of resistance 7.7k

[stj]

Re: Help identify component

not a fuse, not one i'v ever seen.
it may be a ptc or polyfuse of some type.

[madan1]

Re: Help identify component

Can anyone tell me something about the Q1 component?
It looks like a transistor, but what the bleep is that black part on its top?
P.S. I do not need any part number or something.. just some basic info about the part

[budm]

Re: Help identify component

Q1? Where?

[petehall347]

Re: Help identify component

Q1? Where?

next to q3

[madan1]

Re: Help identify component

Q1? Where?

Good question... really forgot to check the images I uploaded

Here is the same image but brightened and with circled Q1 ( my office monitor has crappy brightness, thus I'm not sure how "visible" are the images ).

[stj]

Re: Help identify component

looks like a pyroelectric sensor.
same thing you find in a PIR switch.

the real question is what the hell is it doing in a button assembly?

[madan1]

Re: Help identify component

I believe you are totally correct!
If I remember correctly, the board came out from a scrapped bluetooth speaker ( "sharkk true wireless speaker" ) and I have absolutely no idea what a PIR sensor has to do with such an item... I guess it's time for a tin-foil hat...

[stj]

Re: Help identify component

I guess it's time for a tin-foil hat...

not a wireless one, you need the type with an earth wire!

[redwire]

Re: Help identify component

It's a PIR motion sensor, IC is BISS0001. Shark: "Thermal heat sensor automatically activates frosted LED backlighting for the buttons on the speaker"

[stj]

Re: Help identify component

LOL

thermoelectric sensor and i.c. probably consume more mA than the leds!