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[Jimbob]

I had the same in my last astra.
Alarm would go off when alarmed, unlocked, or even driving!

swapped powersounders under warrenty.

Vaux said 'Dont think of it as the alarm going off, think of it as just the (faulty) sounder going off'  which made sense to me, probably wrong though  

[Terry_Seyforth]

Well power sounder removed, I did get a night sleep. So could this be the problem then, or is there anything else that is linked to this power sounder that would cause the problem ?
I spoke to the guy up the corner and he thinks he can get it trade. prob about £37 he said.
Thanks.
For The guy that said I should be more patient I agree, but when you seem to get one thing after another it is very taxing  

[Jimbob]

or you could save £37 and not have a powersounder

with the extra bonus of the fact it cannot happen again  

[Terry_Seyforth]

Tempting  
The thought is with this car there are so many gadgets, if I keep removing them I will have a load of cable ends with no purpose  :-?
I will see what the outcome is first , whether you guys think it is the power sounder  :-/
Cheers

[Kevin Wood]

whether you guys think it is the power sounder  undecided

It sounds like it's the power sounder, all right!

There is the option of replacing the batteries in your existing power sounder. Depends if it has been badly mullered by batteries leaking over the circuit board. It's not an easy task, though. Case needs to be cut open, batteries soldered in and then case glued back together. An option though. I'd be happy to take a look at it if you like. To be honest, though, it is probably just as well to remove it. It's only there as a backup to the main alarm if someone disconnects the vehicle battery.

Kevin

[Terry_Seyforth]

Do we know what type batteries to put in, rechargable brand, will it have them stamped on the side of the batteries what brand, I have a soldering iron, im quite dab handed with repairing once I know what the problem is, I will take apart today and see if it has leaked over the curcuit board.
Thanks

[Kevin Wood]

They're little 3.6 volt PCB mounted batteries. Two of them in my one. If they haven't leaked all over the place then a DIY change would be fine.

Problem is, the paste that leaks from them is quite conductive and on mine it has got under a load of surface mount components and shorted them out so I haven't bothered to try and repair it yet.

Have a look inside and see what's happened

Kevin

[Terry_Seyforth]

I will thanks...........

[3.2omegaestate]

Firstly I would like to say thank you to those that have directed me in the right direction with my alarm on my 2001 elite estate. It had a mind of its own going off when ever it felt like it at work and at home, which was p*?%ing off work colleagues and neighbours. A quick search revealed numerous threads on the power sounder and how they fail. £57 lighter today and now having fitted it, it is silenced and it appears that the range of the remote has also increased ?? Is this my imagination I wonder.

To fit the new power sounder, remove both windscreen wipers. If they are corroded to the the spindles, having removed the nut, pour boiling water over the wiper arms near the spindle and the soak in penetrating oil. Dont pour water over the windscreen, incase it cracks!! A firm wiggle and they freed off easily. Remove the scuttle panel and then turn the ignition onto stage two (all ignition/ dashboard  lights lit). Remove the 10mm bolt and unplug the sounder. Wrap it in a blanket to deaden the sound or wear ear plugs. Plug new sounder in, turn ignition off and as a Haynes manual would say reassembly the the reverse of removal. Test the alarm by locking the car with the fob and then wait until the LED on the dash slows then unlock the car using the key in the door. Both the horn and the siren should sound.

Any way I have now dismantled my old power sounder with a view replacing the old rechargable batteries.

So for a 2001 Omega Elite Estate 3.2 the part number for the siren is  GM 9194455
The replacement batteries for the sounder are Varta batteries part number 3/V150H with pins, you will require 2 costing you about £10

Follow this link [url][http://www.budgetbatteries.co.uk/20940/3-v150h-size-mempac-nimh-3-6v-150mah-varta-rechargeable-memory-protection-battery-pcb-mount//url]
 
To replace them carfully cut round the plastic join and separate the front and the back of the power sounder. Having got your batteries then desolder the old ones and solder in the new. The Printed Circuit Board is held in by four clips which can be released with ease. Having soldered in the new batteries reseal the unit using some instant gasket and insulation tape.

I now have a spare Power Sounder that I am keeping for when my new one decides to go belly up.

[Kevin Wood]

Well done on the repair and welcome to the forum

Kevin

[Terry_Seyforth]

Thanks what would I do without this forum,  
I will try the repair, if not it is being left off  
Thanks