What is the correct name for this component and how do i test it?I followed the link by Killivolt but is this component different?

I thought it was the same, I was in a hurry yesterday, my apology. When I was looking I found a similar component, it was listed as a triac. But, some resistors look like that form factor. Let me look again, hopefully I have enough time today.


kv

 

I thought it was the same, I was in a hurry yesterday, my apology. When I was looking I found a similar component, it was listed as a triac. But, some resistors look like that form factor. Let me look again, hopefully I have enough time today.


kv

Here is some on Mouser's site, I see one as a triac the other is a switch, but it's not an exact match.

https://www.mouser.com/Search/Refine?Keyword=ACST67S

kv

 

Ok, lets look at the schematic, I'm not sure where it would be located, on the back or under the fridge somewhere. Take a picture or scan it and upload to the site.

Been a while since I worked on appliances, I think I even have a similar fridge, I'll be back in a while. If it's a power switch as indicated or a triac it will control a solid state relay, one or the other could be bad. Best case would be a transistor controlling the gate voltage of the switch or triac or both. It could get expensive real fast if it's the solid state relay.


kv

 

I also think it's a triac, just because that's what the search turns up. I tried to identify the logo here, but no luck. No obvious "MRC" producer.

 

I also think it's a triac, just because that's what the search turns up. I tried to identify the logo here, but no luck. No obvious "MRC" producer.

If he finds the General Schematic we should be able to locate the relay going to the compressor, it might just be a normal compressor relay or solid state.

I don't think the relay would be on the board, might be a 2 stage relay combo not sure without a schematic for the board.

kv

 

There is definitely no schematic anywhere on the freezer.Tried the net but no luck its an Electrolux EUC3109x

 

There is definitely no schematic anywhere on the freezer.Tried the net but no luck its an Electrolux EUC3109x

Is it upright or box? if it's a box freezer it could be behind the panel on the side, remove the panel it should be glued on, at least that's what they did 30 years ago. Geez 30 years....


kv

 

Circled component is a fusible resistor.
What is it's resistance? and the other green resistor. What markings are on them as well?
Also measure the resistance of the two inductors L1 and L2 on both sides of the little transformer
Dpak is a triac for compressor and the smaller sot 89 is a traic for lamp? maybe
Can you get a voltage reading on the cap in front of the transformer, will be high DC 300+, so be careful?
If your not comfortable doing that with the power on then don't do that.

 

Circled component is a fusible resistor.
What is it's resistance? and the other green resistor. What markings are on them as well?
Also measure the resistance of the two inductors L1 and L2 on both sides of the little transformer
Dpak is a triac for compressor and the smaller sot 89 is a traic for lamp? maybe
Can you get a voltage reading on the cap in front of the transformer, will be high DC 300+, so be careful?
If your not comfortable doing that with the power on then don't do that.
View attachment 173737

The resistor you circled is 101 ohms.Marked on it is 100R 5% 3W.
The other green resistor is 27 ohms.Marked on it 27R 5% 3W.
Inductors L1 is 12 ohms and L2 is 0.5 ohms.
Cap in front of the transformer is reading 225 V AC.I am us a fluke 7-300 auto selection for these measurements

 

The resistor you circled is 101 ohms.Marked on it is 100R 5% 3W.
The other green resistor is 27 ohms.Marked on it 27R 5% 3W.
Inductors L1 is 12 ohms and L2 is 0.5 ohms.
Cap in front of the transformer is reading 225 V AC.I am us a fluke 7-300 auto selection for these measurements

Is it a manual defrost or self defrost, is it a box or upright? If there is no manual you'll need to chase the wires back from the compressor, it's possible if you had a brown out that would or could fry the compressor, which means nothing is wrong with the board.

kv

 

Is it a manual defrost or self defrost, is it a box or upright? If there is no manual you'll need to chase the wires back from the compressor, it's possible if you had a brown out that would or could fry the compressor, which means nothing is wrong with the board.

kv

It is an upright and a manual defrost.There is power coming to board at the top of the freezer there are control buttons up there and a digital temperature clock would these not be on even if the compressor was fried if the board was ok?

 

It is an upright and a manual defrost.There is power coming to board at the top of the freezer there are control buttons up there and a digital temperature clock would these not be on even if the compressor was fried if the board was ok?

Until a measurement is taken at the compressor you won't know, but without a schematic I can't tell you how they are powering it. Take a picture of the compressor, I want to see how they are powering it, if to a relay you have a start and run relay possibly a large AC run cap, it's been so long for me out of the appliance service industry I'm almost useless, before you begin hunting power we need to know more. Take a picture and note the wires going to the compressor.

kv

 

It is an upright and a manual defrost.There is power coming to board at the top of the freezer there are control buttons up there and a digital temperature clock would these not be on even if the compressor was fried if the board was ok?

I didn't read your post correctly. No controls and no Temp set indicator?

kv

 

I didn't read your post correctly. No controls and no Temp set indicator?

kv

No light no controls and no temp indicator but power at board.

 

Cap in front of the transformer is reading 225 V AC.I am us a fluke 7-300 auto selection for these measurements

Should be DC on this cap

 

Should be DC on this cap
View attachment 173802

Checked that cap again it is definitely AC.

 

Note on the compressor R600A is a LPG based refrigerant & flammable, used in most newer fridges. They have to use solid state switching for the compressor not relays due to potential leaks & arcing.

 

Note on the compressor R600A is a LPG based refrigerant & flammable, used in most newer fridges. They have to use solid state switching for the compressor not relays due to potential leaks & arcing.

Good to know.
kv

 

Good to know.
kv

Feel a bit stupid because I thought that that board was the only electronics on the freezer but at the top of the freezer is this.

 

So, I'm not sure why you have no display but these are triac tests and ways to trigger them.



https://www.electronics-tutorials.ws/power/triac.html

kv