Re: Capacitors for an oven display
well, is it possible to re-locate the Capacitors faraway from the hot place ?
adding needed lenght of wiring between caps and pcb, instead of soldering them into PCB directly ?
that would give also many cooling solutions for them caps,w hen located freely...........
cagiva4ever
Member
Last Activity: 03-10-2017, 06:51 AM
Joined: 09-14-2011
Location:
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Re: Microwave oven with burnt Paraller resistors at PCB
MWO SUMMARY:
im now on the very final stretch, actually 1-click (*done ordered) away from ordering qty:2 suitable Pwr Relay's. found finally after spending like 30+ hours on web, the suitable and cheapest source. not that i anyway found more than 3 suitable Relays from eBay.
i have found also yet 2 more pwr relay photos and Box casing data used on exactly same PCB as mine, on MWO's ranking from 700W and 800W. 6 different MWO brands models found with same specific PCB.
i have now the Scale...Last edited by cagiva4ever; 03-08-2017, 05:38 PM.Leave a comment:
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Re: Suggestions for desoldering braid.
Vacuum pumps were mentioned...
i use Magnet solenoid operated 30Watt 230vac Desolderer. its Nominal 30Watt isnt i think as much as it gets into Heated Tip nozzle, as the structure doesnt pass heat that well, so its more delicate than 30Watt Nominal power.
as its solenoid operated, with push button held down the "lungs" suck for 1-second'ish and wont blow out unless push button released.
the "lungs" reservoir on it is quite large, so lotsa Desoldering possible to do before cleaning...Leave a comment:
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Re: Microwave oven with burnt Paraller resistors at PCB
[B]R_J[/B] how did you manage to find the Zanty datasheet pdf ? i cant find anything from Zandy as pdf.
as far as i understand the Zandy pdf that you earlyer linked is not complite.
ive been now many hours googling without any luck, ive now used also 2nd OEM pwr relay specs for datasheet but no luck. info midway below.
i think that This exact Zanty relay i have has Coil resistance of 1300ohms (its what my Flickering test also shows at start.
Best replacement Pwr Relay brand...Leave a comment:
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Re: Microwave oven with burnt Paraller resistors at PCB
the Zanty relay has Burning on its external surface at the boxcasing Because the Paraller resistors that Burned, burned the side of the relay.
them paraller resistors got so hot that they burned the Zanty external surface.
because other of them resistors was skinclose to the Relay at the PCB layout space.
So, people feel free to tell me what Relay i should choose from those Ebay linked ones, please. takes 4working days to topup my Paypal account, so ~5days to choose.
...Leave a comment:
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Re: Microwave oven with burnt Paraller resistors at PCB
CHP11 relay is a sparepart relay from Another MWO, which 2nd MWO i have dismantled Prior. this had ~14,5 @ 20Kohms selector. relay is broken. so i cant use it as a sparepart.
Zanty brand relay that has side burn on its box casing is from the MWO in case that im now repairing. i have earlyer written this from it ZANTY relay:
[I]-i now Multimeter resistance measured the "Burned" power relay while it is IN at pcb.
zener diode and the normal diode "orientation"...Last edited by cagiva4ever; 03-06-2017, 11:05 AM.Leave a comment:
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Re: Microwave oven with burnt Paraller resistors at PCB
hi ! thx for info.
that is 1 pricy "jack". comes to my mind a price of a handshake at neighbour town with a Electrician repair man, "off the books" 70euro's for a handshake barely a consultation.
i might get lucky as the IC chip i mentioned has 3 digits still visible at the surface, its not "sanded" deeply. hence i didnt 1st seriosly think it was sanded, as 3 other Chips are normal showing numbers. (Benton smart charger car/auto)
So today i visited...Leave a comment:
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Re: Microwave oven with burnt Paraller resistors at PCB
hi ! ^^ thanks for info
the CHP11 pwr relay mentioned is from another MWO, not from this MWO in case at this topic. just in case.....
i read now more about diff coil ohms ratings. was now easyer to spot the right column thx to your latest post..
en-g5Le.pdf
i have in past dismantled 2 diff MWO's which from i have spares left. iirc 1 mwo was working good and other was broken. so this CHP11 was apparently from the broken1 as i had not tagged left notes to them spares, as i always...Leave a comment:
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Re: Microwave oven with burnt Paraller resistors at PCB
so basically what happened is "lost in translation"...
my multimeter(s) dont have the "auto ranking" for range settings. the CHP11 relay gave readings only on 20K range. i left out to mention that, sorry.
so it seems that the CHP11 is broken after all, no matter that i said "having good one at spares". it seems to have huge Resistant, summink broken shorted on the Core of it as i cant see any outside visible damage on magnetic winding and its copperwire solderings etc....Last edited by cagiva4ever; 03-05-2017, 12:46 PM.Leave a comment:
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Re: Microwave oven with burnt Paraller resistors at PCB
hi !
thanks. for continued help. progress is made.
for the IXO Mosfet, i do not know for sure yet if it is "shorted". i havent taken it of de-soldered it yet from pcb. im not either very "happy" how the soldering looks like at the Mosfet on the pcb, basically it looks like non-complitely reflowed, as it has been hot...
without me googling 1st, may i ask if its possible to Measure it if i take it of the pcb ?
i have never yet had a broken...Last edited by cagiva4ever; 03-05-2017, 08:32 AM.Leave a comment:
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Re: Microwave oven with burnt Paraller resistors at PCB
i now Multimeter resistance measured the "Burned" power relay while it is IN at pcb.
zener diode and the normal diode "orientation" Block any other component to interefere with measurement, so id say its ok to measure while it is IN at pcb.
only the small capacitor is "actively" in same circuit, conencted inseries.
Multimeter gives readings that jump walk allover, start from ~1300 and go down into zero, flickering....Leave a comment:
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Re: Microwave oven with burnt Paraller resistors at PCB
EDIT: was given reply above ^^^thanks.
ok, so back to MWO sparepart box tomorrow then. i have there 2 HV-capacitors at the Box and there was 1 HVMxx diode. iirc HV-cap had same Volatge etc on its tag as my Broken MWO has at its HV-cap.
but still, people feelfree to tell if my ESR-meter is not upto the task measuring such High amp and very high voltage Diode, which to me it looks like to be so per its Specs. bare in mind this is new to me, please.
thk god they arent...Last edited by cagiva4ever; 03-04-2017, 11:51 AM.Leave a comment:
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Re: Microwave oven with burnt Paraller resistors at PCB
hi ! ^^
i havent done anything yet to the relay (CHP11-A240S) or with the Relay, ive been waiting to hear what i should do 1st Regarding its suitability.
i have thow opened the relay boxcasing to have a look of its visible condition.
i havent ever before measured any "relay coil resistance", its totally new thing to me. may i ask how to do it ? if its anything special procedure related into it...
at this relay CHP11-A240S
Multimeter into Pin's no#1 and no#2 gives...Last edited by cagiva4ever; 03-04-2017, 11:24 AM.Leave a comment:
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Re: Microwave oven with burnt Paraller resistors at PCB
hi ! ^^thanks for input and them files etc.
door safety switch and 1 other i have tested Prior, and they are working good. i havent measured them with Multimeter but i know that they'r "contact point switches internally work".
i have in past dismantled same type of switches from a MW-oven that i dismantled. and others. so i know how their internals look like and work.
today i checked my MWO spare parts paket. i have a VGC relay at the spares, this 1 exactly, same brand...Leave a comment:
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Re: Microwave oven with burnt Paraller resistors at PCB
ive been browsing eBay for them Power Relay's.
this is Relay data on my PCB:
brand: Zanty
model: ztuc-d24hs (apparently 24Vdc ? )
Rating:
10A/250Vac 15A 125Vac
15A/28Vdc 28Vdc
im not accurately familiar with these ratings, if this piticular relay is in Toprange of the Scale or at Minium needed range.
Listing:
24vdc power relay 15A 125VAC
[url]http://www.ebay.com/sch/i.html?_odkw=24vdc+power+relay+15A+125VAC&_osacat=0&_from=R40&_trksid=p2045573.m570.l1313.TR0.TRC0.H0.TRS0&_nkw=24vdc+power+relay+15A+125VAC&_sacat=0[/url]...Last edited by cagiva4ever; 03-03-2017, 07:40 AM.Leave a comment:
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Re: Microwave oven with burnt Paraller resistors at PCB
hi !
yes i try to live by appriciating Nature, by all means i can, i pollute as minimal as i can.
i think i have saved 10~20K+ on fixed recycled equipment that i have been given-item swopped and fixed, instead of buying them all new with Retail prices.
the Photobucket.com nowadays is super slow compered to old days, as it now has Adverts up to Spam amount, even "ABP addon at FireFox browser" wont cure it slowness. here in europe Photobucket use to be a "standard"...Leave a comment:
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Re: Microwave oven with burnt Paraller resistors at PCB
hi !
is there summink else that i could do, for you to be able to download them photos ? or is it just your situation location atm that makes it unpossible ?
are you maybe later able with time to download them into your own computer, and have your time in a no horry to look at them ?
i shall start to look for the relay, to source a seller for new1, just in hand source available if needed then later.
yes, the paraller resistors burned the side of the relay. relay didnt...Leave a comment:
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Bosch IXO screwdriver
i have also underwork a [B]faulty Bosch IXO screwdriver[/B]. it doesnt have the common fail on it being Switch continuity.
what my IXO seesm to have as a fault is the Power Mosfet regulator, i think.
i have separately tested the Motor and it works fully. also switches etc separately tested an all good. no visible faulty items on PCB or any obviosu signs.
the Mentioned Mosfet seems to be in ShorCircuit mode, its SMD component but in a size that i can de-solder and replace. i just want to be sure before de-soldering...Leave a comment:
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Microwave oven with burnt Paraller resistors at PCB
Hi !
any friendly Microwave oven experts here ?
i have had this issue underwork now for many months. originally posted on other (useless forum).
Ovens are nowadays cheap, but i have 4-reasons why i will try and fix:
- i try to live Green
- im a diy man i fix all my equipment that i can, i rarely buy anything new, all my equipment are freebys that i have fixed studyed my self.
- money is tight, i have have to choose between new Oven and its value into Food, i will choose the food as i have poverty income.
- i will learn new... -
Re: Fortron FSP300-60ATV repair
hi !
ive been out of internet for many months now, as no internet connection at home, so im using Library's connections once again these days @ village Library.
i have now managed to get a replacement ( used) better wattage PSU and it works. Problem now is that there is no Monitor Signal and Monitor doesnt work hence that.
maybe my OEM broken PSU did some damage to Motherboard or something, or something else (as i have tryed another working monitor)
i will try and find a used working Graphics Card...Leave a comment:
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