I'm back again w/ a problem w/ my Taxi. 
The bell comes on as soon as I flip the power switch and rings continuously. I replaced the bad transistor associated with it but I still have the same problem. Marvin's site says:
"If after replacing the driver transistors the coil/flashlamp is still stuck on, then replace the TTL 7408 or 7402 logic chip. This TTL chip can also go bad. If there is still a problem, the 6821 PIA in front of the TTL chip can also die. "
Can someone give me an idea of where to find these two chips? Maybe I'm blind tonight. Thanks guys!
The bell comes on as soon as I flip the power switch and rings continuously. I replaced the bad transistor associated with it but I still have the same problem. Marvin's site says:
"If after replacing the driver transistors the coil/flashlamp is still stuck on, then replace the TTL 7408 or 7402 logic chip. This TTL chip can also go bad. If there is still a problem, the 6821 PIA in front of the TTL chip can also die. "
Can someone give me an idea of where to find these two chips? Maybe I'm blind tonight. Thanks guys!
