Panasonic NN-S530WFV

[cmj21973]

Need some help.

I'm repairing this microwave. It was in a camper that was plugged into 240V outlet.

Fuse blown and replaced, mic still didn't work.
Followed power supply connectors to pcb F62604T00AP control panel.
CN1 damaged and repaired
D25 component fried 270NS10D have datesheet.

which MOV from Digikey would be best replacement?
http://search.digikey.com/scripts/Dk....dll?Selection

Removed transformer to ring test. Either the winding leads desoldered when it overloaded or more likely when i removed it from pcb. I can order it from SEARS G4C2AAD00005 substitute AETP284U0AP original
Have no clue(parameters) how to search Digikey for an equallent transform, to compare prices.

[Toasty]

Re: Panasonic NN-S530WFV

Clear, well lit, no glare, top and bottom photos of boards please.

Either will do:

http://search.digikey.com/scripts/Dk...&name=P7208-ND

http://search.digikey.com/scripts/Dk...me=495-1431-ND

Toast

[cmj21973]

Re: Panasonic NN-S530WFV

Here's the pics.

[Toasty]

Re: Panasonic NN-S530WFV

Thanks!

Most likely the primary winding opened internally on the transformer from the surge. Figuring the secondary voltages could be done by looking at the board markings. It's a dual voltage transformer. The DC that should be there is 5v and 18v.

A new trafo:

http://www.partstore.com/Part/Matsus...00005/New.aspx

http://www.encompassparts.com/products/?AETP284U0AP

Don't know what the board would cost, but if the IC's got damaged, the transformer would be a waste of money.

Good Hunting!
Toast

[cmj21973]

Re: Panasonic NN-S530WFV

I resolder the winding leads onto the transformer pins.

With it soldered to PCBand using BLUE Ring Tester:
The primary side (P1 & P2) lights up to the first yellow light.
The secondary side (S1 & S2) lights up to the first green light.

I'll order the P7208-ND and go from there.

Thanks for the help Toasty.