Electronics > Repair
Microwave oven - What kind of DC/DC Converter am I looking at?
(1/1)
JannB:
Dear community,

roughly one year ago I tore down an old microwave oven.
Sadly I did not make any pictures of the whole oven (e. g. the type plate).

The part of interest is a DC/DC converter populated on one of the PCBs I salvaged for later use.
The information I have are the following:

Typ / Art.-Nr.: ETXMJ197X1BG
Input: ~ 325 Vdc
Output: DC 12 V and DC 30 V

What I want to know
#1: Manufacturer
#2: Dataseheet (Rated power, line regulation, load regulation, etc.)
#3: Price / Value

I attached serveral pictures as well as the service manual for a similar microwave oven.
The part of interest is referred with IC10.
Unfortunatele the schematics are not searchable so you have to manually scroll to page 28 / chapter 19 to find the converter at the top middle.

I tried to find this part at serveral venders without success.
On mouser.com I get mostly open frame ones like:
RECOM Power
RACM30-12DK/277/OF

fzabkar:
Manufacturer is Matsushita / Panasonic.

https://www.partmaster.co.uk/images/mediator/121/av359wb.pdf (page 28)

https://fcgresources.blob.core.windows.net/fcgpdfs/ED/00230.pdf (page 28)

https://www.sm.azhand.co/ServiceManuals/KA/Microwave/NN-C784M(PTE).pdf (page 33)

https://www.sm.azhand.co/ServiceManuals/KA/Microwave/NN-C784MF%28TTE%29.pdf (page 31)

https://www.commentreparer.com/doc/34435/panasonic-nn-l750wb-nn-l760wb-pdf.pdf (page 92)

Ranayna:
I can at least help with the Manufacturer Logo:
https://logowik.com/matsushita-logo-vector-36730.html

That distinct M stand for Matsushita.

Googling Matsushita ETXMJ197X1BG returns a couple of service manuals like this one, listing the component:
https://www.manualslib.com/manual/2800853/Matsushita-Electric-Nn-V688w.html#manual

So it's a custom part made internally, there will very likely be no public specs available.
Navigation
Message Index
There was an error while thanking
Thanking...

Go to full version
Powered by SMFPacks Advanced Attachments Uploader Mod