Vox Valvetronix ToneLab LE - What to do if; the oven does not heat up?; the oven lighting ceases to function?

Operating Instructions
What to do if ...
.... the oven does not heat up?
ESP Check whether
- the appliance is switched on
- the time is set,
- all the necessary settings have been made,
- the mains fuse (fuse box) has blown.
If the fuse blows several times, please call an electrician.
.... the oven lighting ceases to function?
ESP Replace the oven light bulb (see Cleaning and Care).
If you call in an engineer to resolve a problem listed in these notes, or
due to an operating error, the customer service engineer's visit is not
cost free, even during the warranty period.
If this information does provide you with the necessary assistance,
please seek specialist advice.
A
Warning: Repairs to the appliance must be carried out by qualified
service engineers! Improper repairs can give rise to significant hazards
for the user. If your appliance needs repairing, please contact your local
AEG Service Force Centre.
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