unable to recognize screws...

[koudairanger]

Hi,
I recently got my hands on a China version CAS192D but the voltage won't work.
consider that other products in the 4 stack have it, I'm trying to get voltage changed.

Is there anyone familiar with these screws?

Thank you!

Thank you!

 

[Ghoostknight]

you mean the things holding the plates on the socket?

these are not screws but some kind of "pressfit"

they were pins before, you put the plate on top and press the heads of the pins down "clamping" the plate in place

If the socket is actually the culprit you are better off replacing it as a whole

 

[Ghoostknight]

tho i have to say: its probably unlikely the socket is the culprit, did you measure till where the voltage gets?

 

[dunring]

I've had breakoff screws that look like that. You sink it in, then knock the tip off for security and can't be removed by tools. There's a "One way screw remover" that comes in different sizes for getting them off. Can't tell if a hair dryer on high and some pliers could get enough on them to loosen it. Hard to tell from zooming in the photo, are all of them a little different, like they got snapped off?

 

[koudairanger]

tho i have to say: its probably unlikely the socket is the culprit, did you measure till where the voltage gets?

No I’m just trying to change the cables attached to it, it need to be recabled to 115v
I’m not familiar with IEC sockets so was acting dumb

 

[2leftears]

you mean the things holding the plates on the socket?

these are not screws but some kind of "pressfit"

they were pins before, you put the plate on top and press the heads of the pins down "clamping" the plate in place

If the socket is actually the culprit you are better off replacing it as a whole

I think @Ghoostknight is correct; these look like press-deformed rivet heads to me; I've come across them myself.

I always assumed they use a cross-head stamper to give some extra protection against rotation of the riveted parts, but no idea why that would be needed here. I've seen electrical sockets/components like these with round rivet heads as well as cross-shaped ones like the ones shown here.

If they used FASTON connectors the cables may just pull off, but it appears these cables may simply have been soldered on with some heat-shrink applied...

 

[Ghoostknight]

No I’m just trying to change the cables attached to it, it need to be recabled to 115v
I’m not familiar with IEC sockets so was acting dumb

1. usually the cables are attached to the socket with these: https://www.ebay.de/itm/193430942582 , if you cant pull them off easly: there is tap that needs to be pushed or pulled (you see the hole in the plate counterpart which the tap hooks into)

2. after thinking about your questions: i think you are out of luck..... you cant easly wire a 230V device to a 115V one (atleast im not aware of a way to do this, either its 115V or 230V on one wire), unless the manufacture intended this to be done with a switch

3. Which device is it? do you have a link?

Edit: looking at this picture: https://hifidisposals.com.au/cdn/sh...-92b0-4247b72f4077.jpg?v=1710827259&width=713
you could have luck IF the transformer can be wired for 115V, maybe that was your plan

 

[koudairanger]

1. usually the cables are attached to the socket with these: https://www.ebay.de/itm/193430942582 , if you cant pull them off easly: there is tap that needs to be pushed or pulled (you see the hole in the plate counterpart which the tap hooks into)

2. after thinking about your questions: i think you are out of luck..... you cant easly wire a 230V device to a 115V one (atleast im not aware of a way to do this, either its 115V or 230V on one wire), unless the manufacture intended this to be done with a switch

3. Which device is it? do you have a link?

That was Questyle cas192d

I was trying because their other models (cma800r etc.)supports it with switch, the transformer itself has two other cables hang open there just like cma800r,

and when last time I got these from a chinese dealer(a few years ago, not this machine), they did rewire it to US voltage for me.

The transformer inside was plitron 11221 just for info

 

[2leftears]

Yes, in these type of devices the same transformers can often be wired up for either 230 or 115 Volts. It depends on the winding setup how that needs to be done, sometimes it is a different winding, sometimes it is two windings that are either put in parallel or in series.

Incidentally, never put two same-voltage windings in parallel unless the transformer was designed to accommodate that, otherwise there may be a continuous imbalance current running between the two windings that could make it run quite hot (more of a practical issue for the secondaries than primaries).