Tuesday 28 April 2015

Sticking switches - servicing and replacement


There seem to be quite a few instances of sticky or faulty switches on our (average) 20 yrs old pride and joys. In particular the switch that you check the battery voltage on. I have never asked Brownhills how much they want for a replacement switch, but I am pretty certain it will be considerably more than the £2.20 from this Ebay supplier. There are other switches of this style in the Hymer - so make a note, or come back here when you need one and I'll find it for you.
http://www.ebay.co.uk/itm/261863083076…

(On)Off(On) Momentary Large Black Rectangle Rocker Switch 6-Pin DPDT 12V in Business, Office & Industrial, Electrical & Test Equipment, Components &...
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  • Mike Backhouse Nice find Ron . 
  • Chris Thomas nice find Ron, I need 4
  • Ron Bentham 4 momentaries - thats a lot of clicking!
  • David Olley These switches do tend to suffer from old age. I have removed three of mine, dismantled them and cleaned the contacts. Both momentary and two position types. They are held together by little clips each side and the rocker can be carefully prised out. Great care must be used to avoid allowing the two little springs (they are very small) and the rocking contacts to escape! The contacts on the rockers, as well as the bottom conductors, can be gently cleaned. To replace them it is necessary to use Vaseline on the end of a cocktail stick plus another (dry) cocktail stick to hold it in position. The little springs should be stuck to the inside surface of the rocker with Vaseline, too. Position the rocking contacts centrally, position the rocker centrally and carefully push it back into the switch body. Them with your multi-meter, test the operation of the switch. If all is well, replace it. If not, take it apart and try again, making sure everything is positioned correctly. Such fun! 
    11 hrs · Unlike · 2
  • Mike Backhouse Think I'll buy new ones 
    11 hrs · Like · 1
  • Ron Bentham David Olley you get a Classic Hymers special dedication award for attention to detail and dedication to the cause. You should have been a clock maker....or maybe you are! I'll just wait for a new one to arrive from Ebay!!
    7 hrs · Like · 2
  • Dippy Hippy Unsure how to replace these switches, do they just pull out and the new ones plug in?? Ours work when they feel like it so would be good to pop new ones in (not proficient enough to do what David has done!!   ) All advice greatly appreciated Master Jedi
    2 hrs · Like
  • Ron Bentham You have to get access behind the switch - depends on your Hymer, but usually it's 3 screws and the whole panel drops down. Then you take the 6 wires off the back of the switch - they just pull off. Then the switch pushes out forward through the panel. The new switch pushes in and clicks into place and then you reattach the wires - you did make a note of which wire went where didn't you!
    2 hrs · Like
  • Christian Skeels Just my top tip on electrics and re-wiring things: take several good photos, from several angles, on your phone or digital camera showing how everything is arranged before you start. A good 'before' picture can be a life saver when you discover the thing you forgot to note down!!
    1 hr · Edited · Like
  • Dippy Hippy Thanks guys, will order a couple (after checking they will fit of course) and accidentally forget to fit them and suddenly remember this little job needs doing at the meet. Maybe someone will show us how to do it and make sure we don't connect the fridge to the loo!!
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