PA-32 Cherokee Six/Lance/Saratoga/6X
Flight Crew Instrument; Flight Crew Private
Flight Crew Last 90 Days 20; Flight Crew Total 800; Flight Crew Type 150
Situational Awareness
Aircraft Equipment Problem Less Severe; Deviation - Track / Heading All Types; Deviation / Discrepancy - Procedural Clearance; Deviation / Discrepancy - Procedural Published Material / Policy
Flight Crew Returned To Clearance; Flight Crew Became Reoriented
Aircraft; Human Factors
I departed Hawthorne airport VFR for ZZZ. Prior to departure I was given instructions to depart south to VPLSR for noise abatement and routing to intercept the Los Angeles Mini-route transition to the north.  I have transitioned many times through class B Los Angeles for 10 years.  I mainly use the Coastal Route; but I have used the Mini-rout on occasion.Since I was departing HHR north to ZZZ; it was most appropriate to utilize the lower altitude mini-route at 2;500 feet.  It does require a U-turn from VPLSR and then north to intercept the 128 radial from SMO.  Shortly after making a u-turn at VPLSR; I was handed off to LAX tower and cleared through Bravo airspace.  While tracking to intercept the 128 SMO radial my NAV 1 gave me a NAV flag (NAV 1 was idented and working fine on departure).  I switched to NAV 2; and idented the VOR; but I had drifted east of course.  I began a correction to the west to intercept the 128.  At this time the controller noticed I was east and told me to turn to 270; which I had already started.  I intercepted the 128 and all was fine from that point; but the controller did ask me if I was familiar with the mini route; which I told him yes.  Due to this deviation; I felt a report was necessary.In the future; since departing from HHR and intercepting the mini-route happens very quickly; I will have all back up NAV's ready to go and cross check with pilotage too to catch any NAV equipment errors or deviation quicker. I will also be sending in NAV 1 to [the manufacturer] for inspection.
A PA32R pilot reported deviating from the cleared LAX mini-route departing HHR airport.