Identify this component

wingnut · 10th August 2012, 8:51 PM

Can anyone ID this for me ?
Its on a motor controll board and marked as PS3

Click to view full size!

this is what i THINK it should look like as this one is marked PS2 and there is another marked as PS1

Click to view full size!
markings on PS2 are W30 300
I expect the power on the board to be running around 12 - 24v
near the blown component is a negative wire that looks chared, it may have shorted to the inductor if it got hot and melted the sheath, or it could be the result of the component failing.
I would like to try and repair this as it is the controll board for an automatic door that i hope to put in the MAN CAVE

Bravs · 10th August 2012, 9:11 PM

That looks like a 30V 3A PTC, similar to this .

Without knowing the manufacturer on the one you have. Makes it a bit hard, as different manufacturer uses different marking codes.

I'd say that one is a a raychem/littlefuse equivalent.

TERRA Operative · 10th August 2012, 9:15 PM

I'd say something down the line has gone faulty and caused the PTC to pop.
We usually find a shorted MOSFET/SCR/Diode/etc in the welders at work when that happens.

wingnut · 10th August 2012, 10:17 PM

The self diognostic on the unit say it has a dc fault.
it gives me hope that the logics of the board are ok and this might be part of the motor driveing section, it uses a dc motor so it might have been caused by someone manualy pushing the door open and generating a voltage

I have replaced numerous of these controlers. I am hopeing i can get one of the old ones to work
I might try and clean it up and bridge it with a fuse and see what happens, it cant get much more busted

TERRA Operative · 11th August 2012, 9:11 AM

Do you have an overall photo of the device?

10th August 2012, 8:51 PM	#1
wingnut Member Join Date: Jul 2001 Location: Sydney (Minto) Posts: 214	Identify this component Can anyone ID this for me ? Its on a motor controll board and marked as PS3 Click to view full size! this is what i THINK it should look like as this one is marked PS2 and there is another marked as PS1 Click to view full size! markings on PS2 are W30 300 I expect the power on the board to be running around 12 - 24v near the blown component is a negative wire that looks chared, it may have shorted to the inductor if it got hot and melted the sheath, or it could be the result of the component failing. I would like to try and repair this as it is the controll board for an automatic door that i hope to put in the MAN CAVE

10th August 2012, 9:11 PM	#2
Bravs Member Join Date: Feb 2012 Location: Cranbourne, VIC Posts: 130	That looks like a 30V 3A PTC, similar to this . Without knowing the manufacturer on the one you have. Makes it a bit hard, as different manufacturer uses different marking codes. I'd say that one is a a raychem/littlefuse equivalent. Last edited by Bravs; 10th August 2012 at 9:15 PM.

10th August 2012, 9:15 PM	#3
TERRA Operative Member Join Date: Jul 2005 Location: Niraikanai Posts: 6,536	I'd say something down the line has gone faulty and caused the PTC to pop. We usually find a shorted MOSFET/SCR/Diode/etc in the welders at work when that happens. __________________ I DO NOT support internet filtering!!! Tereno Empireo Rapidmova Reakcii Armeo Check out my Youtube channel!

11th August 2012, 9:11 AM	#5
TERRA Operative Member Join Date: Jul 2005 Location: Niraikanai Posts: 6,536	Do you have an overall photo of the device? __________________ I DO NOT support internet filtering!!! Tereno Empireo Rapidmova Reakcii Armeo Check out my Youtube channel!

10th August 2012, 10:17 PM	#4
wingnut Member Join Date: Jul 2001 Location: Sydney (Minto) Posts: 214	The self diognostic on the unit say it has a dc fault. it gives me hope that the logics of the board are ok and this might be part of the motor driveing section, it uses a dc motor so it might have been caused by someone manualy pushing the door open and generating a voltage I have replaced numerous of these controlers. I am hopeing i can get one of the old ones to work I might try and clean it up and bridge it with a fuse and see what happens, it cant get much more busted