Powerbox cable issue 2014-2015

by **Dave Wilshere** on Tue Jan 28, 2020 11:20 am

Note to all Premium cable customers

Regrettably we have to accept that a defective servo Premium cable was shipped in the period 2014 / 2015. Information from customers indicates that the insulation of Premium cables may become brittle over time, and we therefore request that you check the cabling in your model in order to avoid failures in flight. The insulation breaks off.

We are already in contact with the cable manufacturer who has immediately instigated a chemical check procedure. To date our information indicates that only a partial shipment from 2014 is affected by the problem.

The manufacturer has also pointed out that Premium cable can be damaged by protracted exposure to UV radiation. Tests carried out in the open air over a period of six months showed no damage, and it was only after a year in constant UV light that deterioration to the insulation could be determined. Since the cable is installed inside the model, this should only cause problems in a very small number of cases.

If parts of the insulation on your cable should become detached from the copper, we request that you send us a photograph of the damage and include your date of purchase. Naturally we will replace your cable immediately as a gesture of goodwill.

PowerBox-Systems GmbH
Ludwig-Auer-Strasse 5
86609 Donauwörth
E-Mail: service@powerbox-systems.com

by **steve236** on Tue Jan 28, 2020 7:28 pm

I first noticed this problem back in July last year whilst assembling the tailplane on my CARF Extra at the field, and luckily I spotted the issue just in time. I'm sure the breakdown of the plastic insulation was caused by UV radiation as this was the only cable exposed to light. Upon inspection the other cables inside the fuselage were ok.

by **Dave Wilshere** on Wed Jan 29, 2020 8:48 am

It does seem to just be that batch, I have a length on a display board that's been around since 2017 and the wire is still flexible and insulation seems solid. Needs checking though, we are going through sales from 2014-15 trying to contact people.

by **uhf** on Wed Jan 29, 2020 9:56 pm

I've still got some I havent used. Might get a bit and leave it on the outside of the workshop wall and see how it goes! Think I had some from around this time.

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by **Dave Wilshere** on Fri Jan 31, 2020 3:57 pm

Dave I checked 2014-into 2015 sales and you were not on the list...

D