All ActivityMost RecentMost LikesSolutionsRe: Difference between 2 surge protectors?I think the SSP-50X is the new & improved version. The SSP-50 isn't shown on the Progressive Industries website.Re: Fan buzz progressive dynamics 4645-I've wondered if a different fan may not buzz. I also have the Sunon fans. My WFCO 8955 that I took out has an NSTECH fan. I never did hear it buzz. I just did a search for that fan and the only results were web sites with a bunch of Chinese characters. Plus it has a different size connector on it so I can't do a direct replacement to give it a try.Re: Fan buzz progressive dynamics 4645-I received my replacement fan with the capacitor across the leads today. Quick service! The capacitor they installed on mine is a 470uF 25v. I've installed the fan but I need run down the battery some and charge it to get the fans to come on and see if they are any quieter. Hopefully the capacitor did some good.Re: Fan buzz progressive dynamics 4645-Thanks for posting this information. I installed a 4655 on Saturday and it has the same problem. I called Progressive Dynamics this morning and spoke to a service tech. He said the buzzing was normal. I inquired about a capacitor across the fan leads and he said I could send the converter in and he'd install a cap on the circuit board. Then I referenced this forum post about getting a new fan with the cap installed and he said I'd have to speak to the service manager. The service manager agreed to send a new fan with the capacitor installed. I asked the service tech why they don't just install a capacitor on all the units at the factory and he said that was above his pay grade. I took a look at the WFCO 8955 I removed and found it has a 220 uF cap across the fan lead connector so I don't know why Progressive can spend $0.10 on a cap and put on theirs! Regards, Alan
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