Low Voltage :lights/wiring/transformer problem

[rv02]

Dear All
I have the following problem with my low voltage lighting:

I have a Varilight twin dimmer downstairs and a varilight single slave dimmer at top of my stairs. I have 3 x 50w lV halogen lights downstairs and 3 upstairs. These were working properly until two days ago when non of the lights were coming up. I changed the double dimmer light as I thought it was a problem with that, then some of the lights were not lighting up. I changed the transformer with halolite 50-105w transformer for downstairs and all the 50W lights go through this transformer. All the lights downstirs are working but non of the upstairs ones are coming on, so I changed the upstairs transformers to the same model as I though the transfomer for upstairs had gone and when I switch it on the lights downstairs started to flashing and nothing happened upstirs. I turned the mains off and on and downstirs is working and no lights is coming on upstairs. Im not sure whether I have a major problem with my wiring or its the light switch that is faulty. I am thinking of changing the slave from upstairs but don't want to spend 20 pound or so till im sure. I have wired the master double dimmer wires as Live to Live, neutral to neutral and S to S (with a piece of wire) hope this is a right way for double dimmer master downstirs and single slave upstairs (this is so I can turn the upstirs lights on form both downstirs and upstiars) .

I hope I am making sense as I am not sure about electrics and I think I done everyhtign I could.

Can some one help please.

Much Appreciate it

 

[Spark123]

For a start, 3x50 = 150w so a 105w transformer is too small.
In domestics LV is usually referred to as mains voltage, 12v is ELV or Extra Low Voltage which I suspect you have?
You need to match the transformers to the dimmers too as some dimmers operate slightly differently to others.
You also don't normally have neutral connected at a switch?

 

[rv02]

I tried connecting two lights and still the same result. Any help will be apprecite it

 

[Taylortwocities]

First thing will be to temporarily strap out the dimmers or replace them with standard switches.
You then wil know if your problem is lamps&transformers or dimmers.

At the moment you are p***ing in the dark. (excuse the pun)

 

[1john]

some pictures may help. what did you have installed before this and did it work?

what are the minimum and maximum ratings of the dimmers, i am not familiar with the ones you have used although you cant use most dimmers on a two way switch without having a normal switch at one end (eg not two dimmers on a two way) Are these dimmers suitable for it?
Also you dont mention that there are correct connections for two way switching as you have described it with L, N & SL

 

[Taylortwocities]

They are Varilight dimmers. Even on two way circuit you need a master and a slave and 3-core and earth cable between them.

So your

you cant use most dimmers on a two way switch without having a normal switch at one end (eg not two dimmers on a two way)

is not true for Varilight. With respect 1John, maybe its best not to post unless you know what yr talking about or you'll just confuse things..