Recent content by in4sit4u

only 5 of the 8 pins appear to be used, 3 of them are not even soldered in. Pins 1,3 and 4 are not even used. pin 2 goes to a wire on the switch, pin 5 goes to ground, pin 6 goes to a speaker wire, pin 7 runs through the positive side of the 2 caps and one of the outer pins on the transistor i...

i want to thank everyone for the help. I can't find my exact siren but i have found a few kits online that i can just buy and replace mine. again thanks for all the help. if i find out anything about this circuit i will post and let you know.

The siren does 4 different tones, if I can't find a way to fix this one is it possible to build a very simple circuit that will do the same thing. not real good with electronics but am willing to give it a try if someone can help i wopuld appreciate it.

the numbers on the three leg transistor show 7536A-1 but i can't find any info on this anywhere

no really sure like i said I am new at this electronics stuff.

i think the transistor is a npn because the middle leg is connected to the positive power lead.

i can draw you a pic of the entire circuit board if you want, it only has 5 parts total. It came in a model police car i bought off ebay.

No just repair it. i think i burnt up the ic, not really sure all i know is it won't work anymore. i have already replaced the parts i know only thing left to replace is the 2 parts i mentioned.

There are no numbers on the ic chip itself, nor are there any numbers on the board. If anyone can tell me how to post a pic of the board i will do that. it consist of the ic chip whick has 8 pins another 3 pin that looks like a transistor and has the numbers 7536A-1 on it. then it has 3 caps...

I am trying to replace some pieces in a circuit that produces police siren sounds and can't find new ones. one i believe is a transistor with the numbers 7536a-1 and an 8 pin IC with no numbers on it. Can someone please help me identify these. I am new to electronics and not real familiar...