When i was testing the k8077 i came into some problems. On the first thing, with no ic’s, ip utted into auto-on and the bulb got out and the led started to light up so no problem there. I did teh measurements, most of them seems to be ok, i measure 15.2 V and -15.2 V (that’s ok) and at the other place 5.2 V (ok to). But then, where i need to measure 24 V or slightly higher i measure 33 V. There’ the problem. Also if i turn the swith into ON teh bulb keeps on lighting and friends told me that they saw smoke coming from above (near the 2 Power resistances). I also came to the conclusion that the bulb always starts to lit when the relay get’s closed, so when i in auto-on test it, it goes well, and in on, when teh relay shut the bulb gets on. I don’t know what’s wrong. Can you help me pls?
Thank you.
NVM i found the problem it was the darlingtons, i solder them at wrong spot