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So what do you think the best thing we could do is? There’s a lot of stuff in the house that we can’t not-use while charging (eg. fridge/freezer) and I don’t want to risk destroying things :O(
There have been no reports of actual damage (apart from your monitor, which was probably on its last legs anyway), so it’s just a case of putting up with the noise.
Finishing off the monitor is damage… if it can do that, it can probably shorten the life of other stuff!
However… after leaving the monitor unplugged overnight… It’s working today! 🙂
10 year old Dabs Value monitors FTW 😀
If you un-plug the sound bar, do you still get the whistling from the TV’s own speakers? If you can work out where the whistling is getting into the system it might be worth putting a filter on the mains lead to see if it reduces it.
The whistling isn’t from the speakers, it’s from the TV. The TV speakers are disabled, and unplugging the soundbar (both from TV and wall) don’t make any difference. Even when there’s no signal to the TV (and it does its “check connection” screen) it squeals.
I emailed ChargeMaster, who have passed the details on to their technical people. Wonder if they’ve heard of anything similar before. No response yet.
AnonymousMy TV does this too, alas the only solution I’ve found is to set the car to charge at 1am when nobody is using the TV. It’s only a cheap box (42″ from Argos.. Surprisingly good picture for the price, but speakers are awful) and a few simple power adapters that have the issue so I’m guessing it’s just down to how much effort the designers went to to block out sources of interference. 🙁
Given how unreliably the charge timer is, I don’t really want to do that 🙁
I don’t see why it shouldn’t be possible to put something between the consumer unit and the charger to filter this out? I’d probably pay to have someone fit something because a) the noise really annoys me, it’s gonna give me headaches! and b) I’ve lost electronics in the past due to power variations, so I’m kinda nervous about anything that might be affecting other things :-/
Just a long shot – I have those surge suppression and filter type distribution blocks (6 x 13A sockets) in between the 13A wall sockets and (almost) all my electronic equipment. I wonder if they do any good in this situation? Some weeks before Zoe arrives so I can’t try it.
Wearing my electrical/electronic engineering hat from long ago, I would say that either the Zoe charger or the connection box should incorporate power factor correction and filtering. But that would cost the manufacturer money.
To measure whatever noise is being injected into your mains supply you need a digital storage ‘scope and an isolating high voltage probe. Once that would have cost a fortune, but, if its still on the market, you can get a small box that plugs into a USB port on a computer that will, together with software, sample and record what’s going on. The more difficult to find part is the isolating probe that sits between the mains supply and you, passing the signal but stopping you getting electrocuted.
Don’t be tempted to use a non-isolated probe – you are too valuable a contributor, and you want to get value out of your Zoe.
Perhaps there is a recording digital voltmeter at a reasonable price (possibly for hire), I don’t know. Its been a while since I hung up my probes!
I imagine a 7 kw in-line filter would cost a bit, a might play havoc with Zoe’s charger because it would introduce a series impedance into the supply lines.
Fred
All sounds complicated 🙁
Hoping Chargemaster might respond with something useful; but based on previous dealings with them, not holding my breath!
A quick look suggests a 40A 230V EMC filter to connect between the charger connection box and the mains supply costs about £40-50. Might be worth a try?
I’m hoping if I’m going to spend money like that (and have a competent electrician install it) it’s more certain to solve it than “just a try” 😀
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