Identifying a Power Switch and Function

[mikay786]

Hi Guys, I'm looking to get a Lenovo IdeaCentre A310 back up and running which has got problems with the power switch. It's a 6 pin switch which I am unfamiliar with. Only ever seen 2 pin ones and 4 pins ones before.

So I assume with this switch two pins will be for LED, Power Switch, Reset switch?

What I plan to do is short two of the pins with a bit of cable to see if I can get the board to jump start.

I am assuming the 2 central pins running through the yellow bit are for the LED?

Which ones will be for the power switch and does anyone know where to find a replacement?

[selldoor]

Re: Identifying a Power Switch and Function

I suppose you could test how the switch operates by putting your meter in ohms across the joints ( without the power on) If the switch works.

[mikay786]

Re: Identifying a Power Switch and Function

Switch is dead, the clicky bit has disintegrated.

I was hoping I could just replace with a simpler on / off switch, perhaps with reset. LED/Reset are not exactly crucial.

[selldoor]

Re: Identifying a Power Switch and Function

I cant tell - is it a slide switch or a press down switch - wouldnt have thought you could
have two operations on a press switch is it not just an off/on with a led?

[mikay786]

Re: Identifying a Power Switch and Function

Press down

Perhaps it is just on/off and led, I was just guessing there was perhaps a reset function due to number of pins.

[mikay786]

Re: Identifying a Power Switch and Function

SW1 and Triangle pins / positive?

or

triangle pin and opposite (L3) pin / positive?

[stj]

Re: Identifying a Power Switch and Function

jump across the top pair of pins.
it's just a 4pin push switch with an led inlaid over the button.

[budm]

Re: Identifying a Power Switch and Function

It looks like momentary switch with LED. The typical set up is the top right pin with an arrow is internally connected to the bottom right pin, the top left is also internally connected to the bottom left pin. When the button is push, the electrical contact will be made between the top/bottom left side terminals to the right top/bottom right side terminals.

[mikay786]

Re: Identifying a Power Switch and Function

Cheers so to jump I need to make contact with SW1 pin and the Triangle pin

Do you know of any momentary switch with a LED I could use?

If not a normal 4 pin momentary switch will suffice.

[stj]

Re: Identifying a Power Switch and Function

http://www.rapidonline.com/electroni...with-led-71701

looks pretty close.

[mikay786]

Re: Identifying a Power Switch and Function

Wow thanks, spent a good few hours yesterday trying to find something similar to no avail.

Only difference being the one on the board is a SMD

Wish I had discovered this forum earlier!

[diif]

Re: Identifying a Power Switch and Function

http://www.aliexpress.com/item/Up-to...937973285.html

[mikay786]

Re: Identifying a Power Switch and Function

And it lives!!

Thanks guys, as above were the correct pins to jump, thanks. Have been waiting on the PSU which was delivered today, so tried the jump and booted up fine.

Going to go with the non SMD variant as can pick up from local farnels for £0.50p and just cut and bend the pins back. Will that be ok?

Cuople of other things I need to work on as well which I will report on once I have placed the new switch (cracked PCB for Bluetooth button only, just a single trace)

[highpulse]

Re: Identifying a Power Switch and Function

remove the switch frmo another scrap board , they have a lot to use , and they saved me a lot

[selldoor]

Re: Identifying a Power Switch and Function

Going to go with the non SMD variant as can pick up from local farnels for £0.50p and just cut and bend the pins back. Will that be ok?

I would have thought so if you can get them to the same position as the pads

Was/is the old one glued to te board for stability

[mikay786]

Re: Identifying a Power Switch and Function

No had like plastic locating pin underneath

I think I found something similar that is surface mounted from farnells. What you think, will it do

http://uk.farnell.com/e-switch/tl324...vdc/dp/2115628

compared to the through hole

http://uk.farnell.com/multicomp/tll-...led/dp/9472010 -

[selldoor]

Re: Identifying a Power Switch and Function

Personally I would try the 50p one (tight - born in Yorkshire!!) have you looked at the data sheets for the placing of the pins.on both and does the height matter. Also is it just a low voltage switch - not mains.

[stj]

Re: Identifying a Power Switch and Function

bend the pins,
the smd one will hit you for £15 delivery from the u.s.!!!

[mikay786]

Re: Identifying a Power Switch and Function

Personally I would try the 50p one (tight - born in Yorkshire!!) have you looked at the data sheets for the placing of the pins.on both and does the height matter. Also is it just a low voltage switch - not mains.

Yorkshireman here too so went el cheapo for the 50p ones Bought a few just in case I screwed up which was a likelihood

bend the pins,
the smd one will hit you for £15 delivery from the u.s.!!!

Indeed, when she told me they had to me shipped over from US, no thanks love!!

Updates to follow

[mikay786]

Re: Identifying a Power Switch and Function

Feeeew I nearly went and ****** it up!

I should have pointed out this was my first time working on a board and properly with a soldering iron, have done a little soldering before just joining wires etc. Have got a desoldering gun which is brilliant for through hole stuff but this was a surface mounted switch.

So what did the noob do



Along with melting some plastic bits he pulled a pad up!!!

But thank god it seems it wasn't crucial to the switch working, and here my finished job



Yay, well the LED doesn't work, perhaps its linked to the pad I ripped up but the switch, on/off does work perfectly YAAAY

Might pop some glue around the switch to make sure it is sturdy?

I could of gotten my brother in law to do it but where's the fun in that feels so good knowing you have brought back something to life