They repaired my hi fi for a good price and I also bought a good secondhand spin dryer ( remember those?) for a good price and still going strong after 10 years!)

Asked them for a simple repair to a hifi speaker crossover which was quickly done (2 days) and works fine, for less than 50 CHF.
NB most repairs will first require an estimate (devis) which you'll have to pay for, see their website for rates.