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[Andy H]

definitely 3A output (actually 2917mA).
It doesn't power the seat motors - just the massage bit, possibly a heater.

I'm going to find a 3A wall wart - I think I may already have one in the shed.

Thanks for all the advice/info

I am repairing a reclining chair for a friend.
The transformer which powers the recliner motor and massage/heater is busted.
It is a standard iron cored toroidal transformer rated 12v 3A AC

Let us know when you find out what it actually does provide power to.

Even if it doesn't drive any big motors I can't see how the massage function can work without a motor?

[bigegg]

yeaH,  oops.

The massage unit is built into the seat upper, and is innaccesible without stripping out the upholstery, so I don't know how it actually works - I've never seen it work, but I agree - must be a motor.
It's on a seperate remote control which controls the heater and massage unit - neither of which work without the power supply which I'm trying to replace.

The recliner function is on a seperate power supply, and control - and works perfectly.

I've been in my shed, and I've only got a 2A wall wart, so going to browse the catalogs tomorrow to find a 3A

Thanks for all the help - even with me giving the wrong info 

[bigegg]

Just for my own information.
can someone please just confirm:

"electronic" transformers such as used for low voltage lighting can only be used for resistive loads, and are not suitable for inductive loads, such as motors?

as a side issue - since I'm converting my MV6 interior to a 3 piece suite - can a PC power supply be used to power motors?

[Rods2]

Just for my own information.
can someone please just confirm:

"electronic" transformers such as used for low voltage lighting can only be used for resistive loads, and are not suitable for inductive loads, such as motors?

as a side issue - since I'm converting my MV6 interior to a 3 piece suite - can a PC power supply be used to power motors?

Probably not due to the high peak current on a motors start up. Where motors are an inductive load, you need to correct the power factor using a suitable sized capacitor. This will also help smooth out peak current for short peak loads.

[Andy H]

"electronic" transformers such as used for low voltage lighting can only be used for resistive loads, and are not suitable for inductive loads, such as motors?

Exactly. Low voltage lighting is a resistive load so the designers don't have to design for an inductive component. 

as a side issue - since I'm converting my MV6 interior to a 3 piece suite - can a PC power supply be used to power motors?

Probably. PC power supplies can provide surprisingly high current at 12v (and 5v). Don't know if it is enough to power Omega seat motors though.
Old ones have proper on/off switches. Newer ones need the motherboard to tell them when to go from standby to 'on'. They are designed to be fan cooled so you may find the noise irritating and they will need a safe enclosure as the standard unit is normally safely enclosed in the PC case.