ISD1700 record voice IC damage from power 12V .

[mmc01]

I was use isd1700 to record voice. It can work normally. But today, I use the power supply to 12V, which make it very hot. And when I press the button LED is not flashing anymore, so I removed the old one out and now I put socket 28pin for ISD1700 into circuit . It will make easy to change new IC . And when I put new ISD1700 the LED is not flashing anymore, I check Resistor and Capacitor all circuit in the data sheet on page 16, Every Resistor and Capacitor OK. After that I check power 5V on PCB .The power was normal but when I press the button, LED is not flashing and have no sound. So I don't know how to repair it. please help me.

 

[alec_t]

Check that
1) the IC is the correct way round in its socket and is fully seated,
2) no pin of the IC has beeen accidentally bent under the IC.

 

[cowboybob]

I was use isd1700 to record voice. It can work normally. But today, I use the power supply to 12V, which make it very hot...QUOTE]My emphasis.

It would appear that you've considerably exceeded the max Vcc for this device (by 218%):



Little wonder its misbehaving.

I did notice your indicating a 5VDC value, but see no 12 to 5V circuit on the page 16 schematic. Where did you measure this value?

See all of page 13 of the datasheet.