repair microwave ovan

One more point, during this 4 seconds, the ovan is noisy as usual. But after it failed, it is quiet but the cooling fan is still turning.

Can this help, disregarding its fun typos?

Cheers!

There isn't much besides the rectifier, inverter, and magnetron.

That tick tick might be the inverter trying to power an excessive load - just a guess.

Magnetrons can fail with voltage applied and test good on a meter.

You can probably find a new/NOS replacement for less than $20 on eBay.

It's worth the risk. :)

-- sam | Sci.Electronics.Repair FAQ:

Repair | Main Table of Contents:

+Lasers | Sam's Laser FAQ: | Mirror Sites:

Important: Anything sent to the email address in the message header above is ignored unless my full name AND either lasers or electronics is included in the subject line. Or, you can contact me via the Feedback Form in the FAQs.

function, it stops after 4 seconds regardless of the setting is H/M/L. In t his 4 seconds, there is a slight "tic tic" sound near the a/c rectifier and the large transformer of the inverter (they seat close to each other). I m anaged to find an inverter board and replaced it, but didn't solve the prob lem. So it must be something else that cause the problem.

e, which are unlikely to have any problem. For magnetron, I've measured the resistance of the 2 leads. With my DMM at 200ohm it reads 0.3. Each lead i s open to the case of the ovan. So I think the magnetron is ok. So what els e can I check to resolve the problem. Please help.

in case it can help others.

Thank you for all the replies. I finally get hold of a replacement magnetro n. But there is a scratch mark on the insulator of the emitting end.

Are modern domestic microwave ovens still use beryllium oxide in their magn etron insulator. I know beryllium is highly toxic. But will such scratch ma rk dangerous?