Bonanza 33
Flight Crew Private
Flight Crew Last 90 Days 20; Flight Crew Total 335; Flight Crew Type 250
Communication Breakdown
Aircraft Equipment Problem Less Severe
Air Traffic Control Issued New Clearance; Flight Crew Overcame Equipment Problem; Flight Crew Returned To Departure Airport; Flight Crew Took Evasive Action
Aircraft
After [takeoff] ZZZ tower notified me on negative transponder signal. I acknowledged and attempted to reset. The tower then gave me a frequency change to [TRACON]. Right after contacting [TRACON] I noticed my back up radio went black. ATC cleared me to climb to 6500 feet and verified my location. Within 30 seconds of conversation with ATC my Aspen primary flight instrument went black. I immediately requested to return back to ZZZ and checked and cycled fuses and avionics power after verifying proper volts on the JPI engine monitor. [TRACON] handed me off to ZZZ tower who asked if everything was Ok and I responded with instrument failure. They immediately cleared me to enter left pattern for XXL cleared to land number 2. Within seconds of that call my Garmin 650 primary radio went black and 30 seconds later I lost my JPI engine monitor. I landed safely on XXL at ZZZ but was unable to transmit 7600 or communicate with tower or ground.
Bonanza pilot reported a series of equipment malfunctions and returned to departure airport.