Any electronics gurus?

[blind_elk]

Just built the Jaycar Screacher II alarm for my GTS4 (the one broken into last week), but it doesn't seem to be working correctly (warning buzzer keeps buzzing).

Any gurus out there who can test the componentry and maybe check my construction of the kit? PM me if you can help.

TIA

[funkymonkey]

get a volmeter and check your earths, if there's any NAND, XOR chips in the circuit check the gates make sure that each of them have a toggle state... if all else fails, reverese the polarity (umm the last comment was a joke, don't do that)

[blind_elk]

Yes, I've done that. It seems a capacitor is not fully discharging or a transistor is not switching (or is already switched).

I don't have the gear to properly check the components (only a multi-meter). And I don't have sufficient knowledge of electronics to fully understand how it's all supposed to work.

[funkymonkey]

easiest thing with kits is to take it all off and start again...

[Guest INASNT]

Or you could fork out some $$ for a real alarm that u know will work

[blind_elk]

INASNT,

I had a real alarm, and the little turd simply ignored it while he lifted the radio / CD.

This is tha Jaycar Screacher, which sets off the siren INSIDE the car (2kHz @ 110dB). And from personal experience, you don't want to be within earshot of this little beastie for to long.

[Guest INASNT]

true, but if a thief wants to steal your car he will do it no matter what. Just as easy to get a forklift and lift it on to a tilt truck.

[NismoR34]

was this kit ever reviewed or tested by Silicon Chip mag? that would probably help if you could get the install sheet from the mag.

What about Jaycar, can they help ya?

Call and find out - they will be at least able to point you in the right direction.

[akeenan]

when this things up and running run a wire from the screecher to the horn relay. That will make it a little better

[blind_elk]

OK, just to prove my limited knowledge of electronics, it suddenly dawned on me last night while continuing to ponder the problem, that it doesn't matter that the warning alarm (low volume, turn it off or else) continues to sound - you ain't gonna hear it over the main siren that cuts in 4 seconds later. So I hooked up the main siren, and it works - even from deep inside a Holproof Explorer sock, it works!

INASNT, the little turd didn't want the car, he only wanted the radio, to sell for drugs, probably.

nismoR34 - yeah, tried Jaycar, but they weren't much help, other than being able to confirm that the components seemed to be OK. You get a copy of the review with the kit - it explains how it works, and how to put all the pieces in the right places.