Eeeeeerrrrrrr ; that HV is a Negative Voltage to the case and HV probe meter would kick the wrong way. Just have got to be careful with that stuff as it has "Punch" ! Best: Eugene
Joe Dickerson wrote: > > Joe, > Did you check the high voltage rectifier and the H.V. capacitor? > Also, check the magnetron. There should be low resistance across the two > pins. > To check the H.V. getting to the magnetron, clip the ground lead of the > high voltage probe to ground reference and touch the point of the probe > to ground to see if there is high voltage there. This may be obvious to > you, but I don't know how much training you've had in microwave. Just > trying to help.lol > > Joe > > Joe Tech2004 wrote: > > Sharp microwave R-508AK mfd-1998 > > > > Above unit belongs to my mother who lives in Detroit, where I am at now, > > I had an earlier problem awhile back with the magnetron kept running > > even when unit was off... > > > > Fix Was: Stuck relay from power surge, removed outer relay housing > > cleaned > > carbon from contacts... BINGO.... > > > > Now current problem: Unit powers up but doesn't heat. > > > > Little fuse type CES6 20Amp mounted to the metal shield was blown, I > > temporarily replaced with 15Amp car fuse (all i had wasn't planning on > > this). Anyway fuse doesn't blow but unit still no heat. Sticker inside > > states when replacing that fuse to also replace monitor switch, which > > i'm not sure which is monitor switch, All three switches that operate > > via door opening & closing check fine. I am not in a very good > > serviceable position working on her kitchen counter so please bear with > > me. > > > > There is what appears to be a relay on the front control panel board > > lower left corner, the best i can make out any writing around this on > > the board is > > > > RY2/HB2/ACCOM & on component itself i can make out DU1PU. If i unplug > > red wire going to this no changes, but unplug black wire total shut down > > (obviously main ground..??) my meter reads up to 20 meg-ohm & unit > > checks open but how can that be if when I lift the black wire i get > > total shutdown, i'm wondering if this is my problem & also what switch > > are they referring to when they say replace monitor switch along with > > little fuse. One last thing the component (relay..??) i've been > > referring to does have a slight melted spot in plastic housing (may be > > my problem or from last problem with power surge) i'm returning home > > friday 07/09/04 so i would like to try to fix this before i leave. > > > > Any & All suggestions I would greatly appreciate. Thanks Group "joe" > > > > Joes....Electronics > > (Joe:Tech/2004) > > [EMAIL PROTECTED] > > Fax::509-479-2283 > > > > > > _______________________________________________ > > Tech Repair CD...order your just $49.00 plus shipping...One year of updates free. > > www.intrepid-video.com www.tech-repair.net > > Techs mailing list > > [EMAIL PROTECTED] > > http://intrepid-video.com/mailman/listinfo/techs_intrepid-video.com > > > > -- > Joe Dickerson > Joe's TV & Appliance > Rt 1 Box 3781 > Jasper, Texas 75951 > (409) 384-3325 > use same no. for fax > > _______________________________________________ > Tech Repair CD...order your just $49.00 plus shipping...One year of updates free. > www.intrepid-video.com www.tech-repair.net > Techs mailing list > [EMAIL PROTECTED] > http://intrepid-video.com/mailman/listinfo/techs_intrepid-video.com -- Head Witch Doctor and Chief Bottle Washer Eugene Spooner , CET , AAS , NP Eugene's Carry-In TV 1417 Eastway Drive Charlotte , NC 28205 mailto:[EMAIL PROTECTED] _______________________________________________ Tech Repair CD...order your just $49.00 plus shipping...One year of updates free. www.intrepid-video.com www.tech-repair.net Techs mailing list [EMAIL PROTECTED] http://intrepid-video.com/mailman/listinfo/techs_intrepid-video.com
