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Microwave Interal Fuse Rating Unknown

Microwave Interal Fuse Rating Unknown

Our Luker MW 17 SV1 microwave stopped working. All panel indicators are dead. Power lead fuse (standard domestic 13A) is good as is the supply voltage. Internal ceramic cartridge fuse (32 mm long) has blown. Frustratingly, there are no markings on the fuse so I don’t know what Amp rating it is - nor whether it is a slow-blow type. Circuit diagram is no help as also does not show any component values. This single fuse is located on the mains power board (Noise Filter) but again there is nothing to indicate the component value. This pcb has 3 identifying stencil labels. These are: a) DNV-0818A b) TC 6081B 02 1029 c) TC - 368 94V-0


"Hi @chris230 ,

According to this link (search for DNV-0818A in the catalogue), a DNV-0818A-5 has a GEV part number of 403188

When zooming in it shows that the fuse is a 250V 12A. (see image below)

There is no mention of T or S (timed or slow - means the same thing) on the board’s fuse rating so it must be a standard fuse i.e fast acting.

Be aware that there is always a reason why a fuse blows so maybe order two or three as you might have to find out why it blew.

Be safety aware when working in microwave ovens. The HV capacitor can store >5000V DC for months even if the power has been disconnected for this length of time. This amount of voltage can seriously injure you. The capacitor needs to be discharged correctly before doing any further work in the microwave oven. Apologies if you knew this already

(click on image to enlarge for better viewing)"

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