Seven Star SF500 500W 110v/220v 220v/110v Step Up/Down Automatic Transformer Adapter

I moved from the US to Italy earlier this year and shipped a 10ft container with my little car, some of my belongings that fit in the space after the car was inside, including some small electric appliances.I purchased one Seven Star 500W and one 3000W converter from another brand that weighs a ton (6" x 7.2" x 9.8" and weighs 37 lbs (!!!), and it blew a fuse the first time I tried to connect it, so I haven't touched it since) in order to use US 110V/120V small appliances in Italian 220V environment. After doing much research on which appliances w/ what wattage, Hz, whether AC or DC would actually work, and which items are simply not compatible, I sold my bigger appliances such as 50" TV, microwave, Kitchenaid stand-up mixer, etc. and decided to trust that converters that I've purchased will save me from purchasing everything brand new.From what I read, the rule of thumb is that the total wattage should be at least double the wattage of the appliance in question. As for testing it, I am not willing to try.Here are the items I've connected to the Seven Star 500W converter:- Cuisinart Smart Stick 2 Speed Hand Blender (B00AN9UJ68): works great- 28" Samsung Smart LED TV (UN28H4500): works great; used to watch only Netflix, not cable (incompatible)- Cuisinart Citrus Juicer (CCJ-500): clunky, rotates only one way, doesn't spin unless pressed with a lot of pressure, and final spin feature doesn't work at all- Epson all-in-one inkjet printer (C11CC31201): worked great until I took it off the converter and connected to the outlet with just a plug adapter. There was an explosion. There was smoke. It died.- Nord Stage 88 keyboard (NSTAGE2-EX-88): this is a keyboard instrument costing ~$5k and it works!- JBL Studio Monitors (LSR4328P): these are a pair of large speakers costing ~$1500 that I use with the keyboard and they work!So far, this small 500W converter has been working well for the past 5 months in Italy, so I purchased another one during my last visit to the US.

I use a blender that requires 230-240 volts and 220 watts. I connect a voltage converter to it capable of up to 230 watts. I've never had a problem with the converter in the last ~10 years. Then about a few months ago it stopped working. I had already blended several jugs of smoothies and then suddenly the blender stopped mid-way while I was blending. Also the converter's power light went off. For each jug, the blender would be on for a couple of minutes in both normal and high power modes. Then the blender would be off for a few moments while I pour out the smoothie and refill the jug with new ingredients.I researched voltage converters on Amazon and discovered the suggested advice is the converter's wattage should not only be greater than the device's wattage but actually 1.5 times of the device's wattage. So that means for my blender I should get a converter capable of at least 330 watts.I picked this converter for three reasons. First the wattage is more than enough. I wanted a buffer and I didn't want to just get a 330 watt converter and also I didn't see any converters with 330 watts. So the next best wattage is 500. Second this converter has auto voltage. With my previous converter, I had to flip a switch directing which way to convert. I never liked this because I was afraid it might be flipped accidentally and possibly cause damage. Third the size is similar to my previous converter.I am glad I am able to blend again. I blended one jug of smoothie and the blender worked great. The converter is also easy to use: just plug it in, plug in the device and flip the converter's power switch.The smoothie also tastes great! If anyone's interested:1 Ataulfo Mango, peeled and sliced, the rock/seed is not used2 California Mandarins, peeled and separated, remove any seeds1 Banana, peeled and slicedButtermilk churned from about half a pint of Heavy Whipping Cream, resulting in about 150 mL4 Ice CubesMy blender is: National Juicer/Blender Model: MJ-171NR