Jump to content



Learn appliance repair at the Samurai Tech Academy.  Learn more.  Earn more.


Parts Search
Site Search

FAQs | Store | Memberships | Repair Videos | Academy | Newsletter | Beer Fund | Contact


Welcome to Appliantology.org, the Web's Premiere Appliance Repair Resource!

The world-famous Samurai Appliance Repair Forums


To get started, click here.


Already a member of the Appliantology Academy? Just sign in with your username and password in the upper right-hand corner of the screen.

 


Photo

Microwave rvm1535dm2bb blows control board

Microwave rvm1535dm2bb control board

  • Please log in to reply
6 replies to this topic

#1 tpoindexter

tpoindexter

    Senpai

  • Master Appliantologist
  • PipPipPipPip
  • 635 posts
  • Location: USA
  • Flavorite Brew:Beamish

Posted 08 February 2013 - 06:42 PM

Hotpoint microwave 2010.

Got a call that this unit was dead.

Went out and found the control board not illuminated or accepting any input from touchpad.

Checked for current and found current going into microwave up to the board.

Followed instructions on tech sheet went through steps that led me to bad pcb.

Replaced PCB unit worked. Ran it 3 times for a total of about 2 minutes and left.

Customer called back next day and said it was dead again just like before.

Will be going back and checking voltage, fuse, and see if it's the board that's really bad again.

Any suggestions?

 


Test

Use the Appliantology Parts Search Box to Find What You Need!
Enter your model number, part number, type of appliance, brand, or even a part description.
365-day return policy on all parts purchased here, even electrical parts that have been installed!

#2 RegUS_PatOff

RegUS_PatOff

    Sensei

  • Academy Instructor
  • PipPipPipPipPip
  • 33,588 posts
  • Location: USA
  • Flavorite Brew:Chief NTSC Black & White

Posted 08 February 2013 - 07:58 PM

has this M/W worked OK up ill now at this location ?

any visible damage to the Board ? 

pictures ?


.

one of my video productions: “Easter Seals: Walk With Me”

every day is Down Syndrome Awareness Day
"A Child Is Waiting" . Burt Lancaster . Judy Garland . 1962

RegUS_PatOff > www.youtube.com/watch?v=oPAY2LsKVEw

#3 tpoindexter

tpoindexter

    Senpai

  • Master Appliantologist
  • PipPipPipPip
  • 635 posts
  • Location: USA
  • Flavorite Brew:Beamish

Posted 08 February 2013 - 09:32 PM

has this M/W worked OK up ill now at this location ?

any visible damage to the Board ? 

pictures ?

I'll need to find out.

No.

No.

 

I need to take more pictures while working on appliances.


Test

#4 Samurai Appliance Repair Man

Samurai Appliance Repair Man

    Shōgun

  • Master Samurai Tech
  • 29,844 posts
  • Location: USA
  • Flavorite Brew:Sapporo Original Draft Rice Lager

Posted 10 February 2013 - 07:16 AM

No telling what you'll find-- just go into it with Zen Mind - Troubleshooter's Mind and don't assume anything.  Treat it like a new problem and start by verifying voltage at then outlet than work your way inside the microwave and go from there.  



#5 tpoindexter

tpoindexter

    Senpai

  • Master Appliantologist
  • PipPipPipPip
  • 635 posts
  • Location: USA
  • Flavorite Brew:Beamish

Posted 11 February 2013 - 06:02 PM

Ok, here's what I've done.

Lady was rushing me to get it done so to get her off my back I told her I could come by and pick it up. She agreed.

Got it one the bench, opened it up and found the thermostat open.

 

Also realized I was in such a hurry I didn't check to see if anything was left in it.

I found a glass plate and piece of toast.

 

Jumped the thermostat and ran it with water in it for 3 minutes. heated fine.

Installed new thermostat ran 3 minutes and it ran fine.

Installed cover an ran for 5 minutes. Worked fine.

 

Will return microwave and check outlet voltage.

 

Any thoughts?

 

One of my thoughts is the microwave needs to be ran with a load. Toast isn't much of a load. Don't know how long she was running it for. But I'll ask.

I'm not sure how long you can run a microwave without a load. Anyone know anything about that?


Test

#6 Samurai Appliance Repair Man

Samurai Appliance Repair Man

    Shōgun

  • Master Samurai Tech
  • 29,844 posts
  • Location: USA
  • Flavorite Brew:Sapporo Original Draft Rice Lager

Posted 12 February 2013 - 09:31 AM

Microwave energy has an affinity for and is attracted to water.  Microwave ovens work by making the water molecules vibrate rapidly and this, in turn, creates the heat in the food.  Without sufficient water in the oven cavity to absorb the microwave energy, the excess microwaves will bounce all around including back at the magnetron causing early magnetron failure.  That's why there's thermal protection both on the magnetron and the oven cavity.  

 

How much water is there in a slice of bread?

 

How effective do you suppose a microwave oven would be at heating up a slice of bread?   

 

Sounds like an opportunity for customer education (all of this explained in her owner's manual, BTW).  This should also be treated as a completely new service call because this had nothing to do with your previous repair.  If she complains, just explain to her, "Yes, ma'am, I agree: it's expensive to be willfully ignorant and mistreat your appliances.  That'll be $195 for the repair plus $75 pickup and delivery charge.  Would you like fries with that?" 



#7 RegUS_PatOff

RegUS_PatOff

    Sensei

  • Academy Instructor
  • PipPipPipPipPip
  • 33,588 posts
  • Location: USA
  • Flavorite Brew:Chief NTSC Black & White

Posted 12 February 2013 - 10:24 AM

... How much water is there in a slice of bread?

less water in a slice of toast ...

If there's not enough "food" in the M/W, place a cup with water along with the "food"
.

one of my video productions: “Easter Seals: Walk With Me”

every day is Down Syndrome Awareness Day
"A Child Is Waiting" . Burt Lancaster . Judy Garland . 1962

RegUS_PatOff > www.youtube.com/watch?v=oPAY2LsKVEw





Also tagged with one or more of these keywords: Microwave, rvm1535dm2bb, control board

0 user(s) are reading this topic

0 members, 0 guests, 0 anonymous users


FAQs | Store | Memberships | Repair Videos | Academy | Newsletter | Beer Fund | Contact


Use the Appliantology Parts Finder to Get What You Need!
Enter a model number, part number, type of appliance, brand, or even a part description.
365-day return policy on all parts purchased here, even electrical parts that have been installed!

Your Sometimes-Lucid Host:
Samurai Appliance Repair Man
"If I can't help you fix your appliance and make you 100% satisfied, I will come to your home and slice open my belly,
spilling my steaming entrails onto your floor."


The Appliance Guru | Master Samurai Tech

Real Time Analytics