Need appliance parts? Call 877-803-7957 now or use the parts search box:

Parts Search

Learn how to be your own tech line…

Click here to check out our structured, online appliance repair training courses for rookies and experienced techs.

FAQs | Repair Videos | Academy | Newsletter | Podcast | Contact

Stay connected with us...

Samurai on Facebook - become a fan today! Sign up for our free newsletter and keep up with all things Appliantology. Subscribe to our YouTube channel for lots of appliance repair tips and help! Follow the Samurai on Twitter and get timely morsels of Appliantological Wisdom! Subscribe to our MST Radio podcast to learn secrets of the trade.
btenpin

Sharp microwave drawer

13 posts in this topic

I;ve got a Sharp KB6525ps that is dead.  have 120 volts at filter board, all TCO's are closed.  120 volts to power board in back, no dispaly nothing.  I received a manual, but it is not very clear, hoping someone has had some more experience with this one.  I am guessing which I hate doing the power supply board, all the manual gives you is a wiring diagram no schematic. I have tested all the interlocks and they are good,  not sure about power path, there is also a "switching power board".  I am thinking this is to cycle power of magnatron as it has triacs mounted on it, but power goes between power supply board and it not sure which gets power first.

 

I don't speak chineese or korean so I'm a little lost hopefully one of you can help.

Share this post


Link to post
Share on other sites

Need appliance parts? Call 877-803-7957 now!

Not much experience with this one.  I'd suspect the control panel (interface).  Those are more prone to static damage than power supply boards.  Any dc voltage to interface from power board?

Share this post


Link to post
Share on other sites

I;ve got a Sharp KB6525ps that is dead.  have 120 volts at filter board, all TCO's are closed.  120 volts to power board in back, no dispaly nothing.

If you have 120v at the pcb,  and no display then the board is bad.

Share this post


Link to post
Share on other sites

Sorry forgot to mention I replaced user control and display no change.

Share this post


Link to post
Share on other sites

Have you checked the outlet for an open neutral?  If the neutral is open, you'll read voltage but own't get current flow.  

Share this post


Link to post
Share on other sites

It's in my shop now good power to unit.  I guess I'm going to have to bite the bullet and get a relay board as this is where I have power into but nothing coming out.  Bad FM box ( don't know what goes on in there "friggin magic" aka FM box.)

 

Now just need to find part used Global Micro last time unless someone has a better source for Sharp parts

Share this post


Link to post
Share on other sites

get a relay board as this is where I have power into but nothing coming out.  

 

That's the key right there and Troubleshooting 101: If a component is getting proper inputs but not giving proper outputs, it's bad by definition.  Didn't know you had gotten this specific with the troubleshooting.  Sounds like you done found the problem!

Share this post


Link to post
Share on other sites

Well after a long wait to obtain coveted Sharp component new relay board (no other descripter) Installed no change still have power up to FM board no display nothing!!

 

I don;t like part changing monkey's and don't want to be one, but this thing has got me pickin fleas from my scalp.  Any help would be appreciated

 

Brian T

Share this post


Link to post
Share on other sites

I;m attaching manual I have for this maybe one of you fermented masters can see through the viel of this unit and impose some wisdom that's been hidden from me. 

 

 

Ok I was going to attach file, but obviously I don't know how to do that here.

Share this post


Link to post
Share on other sites

I;m attaching manual I have for this maybe one of you fermented masters can see through the viel of this unit and impose some wisdom that's been hidden from me. 

 

 

Ok I was going to attach file, but obviously I don't know how to do that here.

 

 

Not sure why you can't but you can send the me by attaching to the form on the contact page and I'll add it to the Downloads section:  http://contact.appliantology.org/

Share this post


Link to post
Share on other sites

Thanks, but I was aware of the Dacor unit and have that manual.  I have worked on a few (3) of them (Dacors), minor drawer issues and 1 mag.  I have that manual which is exact copy of the Sharp manual which I have don't believe it's a Samsung.

 

I'm  having issues decifering the IC, IC1 etc The components I have checked in the power supply circuit are all good (closed)interlocks, tco's, fuses There are 2 circuit boards + the User interface or LSI.  I have replace the LSI or user interface and the board mounted on floor of unit.  Ive double checked all connections.  I can't say i've done continuity through harnesses as all the wires are white and no markings.  I guess I can remove harnesses and visually check end to end.

 

Why do these things always pop up when your slammed, just what I want to do when I get done at 7:00 fight with this thing, and cannot get any mfr support, and parts take 2 weeks to get.  Ready to toss this thing, and hang head in shame

Share this post


Link to post
Share on other sites

... which is exact copy of the Sharp manual which I have don't believe it's a Samsung.

sorry, I meant Sharp..

At least it's not a Panasonic Inverter M/W :woot:

Share this post


Link to post
Share on other sites