Matthew Hill
New Member
Hi all,
I'm an electrician by trade but am definitely a relative rookie when it comes to electronics.
I'm having a go at repairing a faulty circuit board for my cousins Daewoo Fridge, now I have good reason to believe the transformer is the source of the problem. I have tested the transformer and has 120v at the primary side which is as expected, but then getting 70v on the secondary side (testing back to the incoming common for reference).
I was under the impression the secondary side supplying the rest of the board would be in the 20-12v range.
1- Would my assumption be correct?
2- Should I not be testing back to the incoming neutral for reference on the secondary? (on the two assumed terminals of the secondary side they both have 70v back to the incoming common and 0v between them.)
3- Is there any way to identify the transformer to hunt down a replacement?
I've attached a photo of said transformer. Am I right in thinking it's a SMPS transformer?
Thanks in advanced for any shared wisdom/help
Cheers,
Matt
I'm an electrician by trade but am definitely a relative rookie when it comes to electronics.
I'm having a go at repairing a faulty circuit board for my cousins Daewoo Fridge, now I have good reason to believe the transformer is the source of the problem. I have tested the transformer and has 120v at the primary side which is as expected, but then getting 70v on the secondary side (testing back to the incoming common for reference).
I was under the impression the secondary side supplying the rest of the board would be in the 20-12v range.
1- Would my assumption be correct?
2- Should I not be testing back to the incoming neutral for reference on the secondary? (on the two assumed terminals of the secondary side they both have 70v back to the incoming common and 0v between them.)
3- Is there any way to identify the transformer to hunt down a replacement?
I've attached a photo of said transformer. Am I right in thinking it's a SMPS transformer?
Thanks in advanced for any shared wisdom/help
Cheers,
Matt