Friday, October 16, 2015

Noxxa Multifunction Pressure Cooker - No Power

By leorick  |  10/16/2015 10:27:00 PM 16 comments

Just to share how to fix Noxxa Multifunction Pressure Cooker no power issue.

Symptom: The front panel didn't light up. So let's open it.


Start check the simple things first, temperature fuse continuity? OK, any swollen capacitors? nope!

Next, power it up and check is there any output before (AC) and after the bridge (DC)? YES.


Regulator (7805) output? NO! Found it. Input is about 14V but no output

This is the power supply for the front panel circuit board.


 Desolder it out an do a quick test by it an 12v input


No output at all, compare with the new one

Put it back together again, plus a heat sink to the 7805 regulator. This might prevent it from overheating again, I hope so.


Finallly :-)

16 comments :

Unknown said...

My noxxa problem is no heating after select any function for cooking. Still on checking & suspected intelligence thermo switch at a middle of pressure cooker. But did know how to confirm if that is main culprit.

Neostar said...

My noxxa no power..already replace regulator with new one with heat sink..but still no power..

leorick said...

What is the regulator input voltage?

Hi my noxxa,after ON few minutes....show poor connection power light ON OFF ON OFF...what to do

leorick said...

Try to look for dry joint and resolder

Unknown said...

How to replace the regulator?

leorick said...

Get the new 7805 regulator https://www.google.com/search?q=7805&tbm=shop, desolder, replace and solder it back again.

Safuan said...

hi, for my noxxa, i checked the bridge working ok. then check the input to regulator. only 0.5volt.. i think this is not normal (should higher than 5V-8V) Any other parts to check considering this findings? tq boss

leorick said...

Trace all components between the bridge and the regulator. Maybe the big resistor beside the buzzer?

Unknown said...

NPC saya tidak panas.. selepas penggantian thermofuse yg rosak.. selepas on relay made and unmade lps on button.

leorick said...

secara teori sepatutnya kalau relay 'on' voltan akan sampai pada elemen pemanas.
saya dah takder NPC [dah jual :-) ] jadi hanya boleh agak2 litar.
cuba periksa ada voltan sampai tak kat terminal elemen pemanas bila relay = 'on'

Unknown said...

Hi.. my noxxa will lights up all of the light at the panel... n i did not found the problem.. do you know how to check?

leorick said...

Both 7-segment become "88"? and all LEDs light up?
To my best guess, 2 possibilities;

1)
Digital board issue, need to trace, dry joint perhaps? especially at the microcontroller & ceramic resonator area

2)
Voltage supplied to the digital board noise, capacitor issue

Unknown said...

My noxxa suddenly off during cooking. It intermitten . What should i check?

Unknown said...

Internal sensor which one in this noxxa cooker?

same with my noxxa. it will light up all the red indicators on the panel. Do you have any suggestions?

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