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Old 09-14-2022, 03:30 AM   #1
sjw
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Default Computime CANh011 Kitchen Oven controller burnt resistor what value?

Hello. I'm having a go at repairing my neighbours electrolux oven. This controller board mounts a tier display and has 3 button inputs. I have been given only the board.
There is a large 2Watts? Resistor that is on a power bus that goes to what i'm assuming is heating element and to a power supply that gives the board microprocessor power.

I don't know the value of the resistor its too burned.

Ideally I would like schematics or the probable value if people are familiar with repairing such devices.

Failing that any advice on this from what i can see might be a voltage divider?

I suspect this board is similar to other brands, its probably derived from some reference design somewhere.


Computime CANh011 Touch Slim Oven Timer V0.5


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Old 09-14-2022, 08:32 AM   #2
stj
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Default Re: Computime CANh011 Kitchen Oven controller burnt resistor what value?

the right side of the board looks like a switching psu, and a very overheated and probably shorted ceramic cap under the big electrolytic
also, check the yellow MOV isnt shorted next to the cracked resistor
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Old 09-14-2022, 12:01 PM   #3
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Default Re: Computime CANh011 Kitchen Oven controller burnt resistor what value?

Quote:
Originally Posted by stj View Post
a very overheated and probably shorted ceramic cap under the big electrolytic
It's a reflection.
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Old 09-14-2022, 12:57 PM   #4
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Default Re: Computime CANh011 Kitchen Oven controller burnt resistor what value?

partly, but i'm not sure
what i am sure about is we have a Viper switching psu and a broken resistor with no pcb burn that may be acting as a fuse
i would 100% be looking for a short on the right of the board.
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Old 09-14-2022, 01:57 PM   #5
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Default Re: Computime CANh011 Kitchen Oven controller burnt resistor what value?

CANH011 oven timer board same as Candy/Lamona/Rosieres/Zerowatt/Hoover 42819496, 42837731.
In other board pics on the web, it looks like 100Ω at 2-3W flameproof, fusible. There are 15mmx5mm 3W like TE RR03 or Vishay 2W PR02 series.
The resistor R100 is a safety component, and does not burn up unless there is a short-circuit somewhere else.
I would suspect the Viper IC U100, shorted D100, C2, C101 etc.

Last edited by redwire; 09-14-2022 at 02:03 PM..
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Old 10-18-2022, 07:40 PM   #6
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Default Re: Computime CANh011 Kitchen Oven controller burnt resistor what value?

I found this picture online - does it help? The resistor color code appears to be "BROWN-BLACK-BROWN with a gold tolerance band. That means 100 OHMS, 5% tolerance.


Last edited by DennisH; 10-18-2022 at 08:10 PM..
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Old 10-19-2022, 04:10 AM   #7
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Default Re: Computime CANh011 Kitchen Oven controller burnt resistor what value?

100ohm
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