Double check you have the capacitor on pin 6 the right way around. It should have it's positive side to ground, despite the IC running on a +5V supply.
Brian.
I checked it again.
a little more info..
i performed this test
"Put 5 volts into pins 10 and 11, then check pins 7 and 14 again. Should have about -10 volts output on each.
Put 0 volts into pins 10 and 11, then check pins 9 and 12. Should have about .6 volts output. "
once in a while this starts giving this right result and ic doesnt heat,, but after about 1 seconds the heating issue pops up again
- - - Updated - - -
I checked it again.
a little more info..
i performed this test
"Put 5 volts into pins 10 and 11, then check pins 7 and 14 again. Should have about -10 volts output on each.
Put 0 volts into pins 10 and 11, then check pins 9 and 12. Should have about .6 volts output. "
once in a while this starts giving this right result and ic doesnt heat,, but after about 1 seconds the heating issue pops up again
to be more precise, this is the test i performed
"
The following two tests check each "TTL in - RS232 out" converter.
Put 0 volts into pins 10 and 11, then check pins 7 and 14. Should have about 10 volts output on each.
Put 5 volts into pins 10 and 11, then check pins 7 and 14 again. Should have about -10 volts output on each.
If that succeeded, then check each "RS232 in - TTL out" converter. Connect pin 7 to pin8. Connect pin 13 to pin 14. This will be a "loopback test".
Put 0 volts into pins 10 and 11, then check pins 9 and 12. Should have about .6 volts output.
Put 5 volts into pins 10 and 11, then check pins 9 and 12 again. Should have about 4.5 volts output.
"