Narrative:

We were cleared for takeoff on runway xxl. With a clearance for a right turn [on course]. The tower handed us off to departure and the last transmitted clearance we heard was for another right turn heading. We could not hear; nor could we transmit on the last assigned and guard frequency. To avoid penetrating into any other airport's airspace from the last assigned heading; we decided to turn towards [an open area] to troubleshoot. We were squawking 7600 on the transponder. For a brief moment; we were able to hear TRACON on guard frequency. The controller told us to climb to 10;000 ft. Initially started to climb to 10;000 ft. The captain for a brief moment was able to transmit on guard frequency advising the controller of the radio failure; at which the controller told us to descend to 3000 feet and that we were cleared for the approach into ZZZ for runway xxr. Again; we were not able to further communicate with ATC and came in for an overweight landing on runway xxr. After vacating the runway; we were met by emergency vehicles and called our company operations via cell phone and requested they send a follow-me car so that we could head back to our ramp. Upon; returning to the gate; aircraft maintenance discovered there was an internal failure that caused both VHF radios to become inoperative. The maintenance supervisor confirmed that it was not a 'stuck' or 'hot' mike. When we returned to the gate; aircraft maintenance advised there was an internal failure that caused both VHF radios to become inoperative. Research the maintenance records; failure modes; and history of the installed equipment.

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Original NASA ASRS Text

Title: B757 flight crew reported VHF 1 malfunctioning on departure and returning to land.

Narrative: We were cleared for takeoff on RWY XXL. With a clearance for a right turn [on course]. The tower handed us off to Departure and the last transmitted clearance we heard was for another right turn heading. We could not hear; nor could we transmit on the last assigned and guard frequency. To avoid penetrating into any other airport's airspace from the last assigned heading; we decided to turn towards [an open area] to troubleshoot. We were squawking 7600 on the transponder. For a brief moment; we were able to hear TRACON on guard frequency. The controller told us to climb to 10;000 ft. Initially started to climb to 10;000 ft. The Captain for a brief moment was able to transmit on guard frequency advising the controller of the radio failure; at which the controller told us to descend to 3000 feet and that we were cleared for the approach into ZZZ for RWY XXR. Again; we were not able to further communicate with ATC and came in for an overweight landing on RWY XXR. After vacating the runway; we were met by emergency vehicles and called our company operations via cell phone and requested they send a follow-me car so that we could head back to our ramp. Upon; returning to the gate; aircraft maintenance discovered there was an internal failure that caused both VHF radios to become inoperative. The maintenance supervisor confirmed that it was not a 'stuck' or 'hot' mike. When we returned to the gate; aircraft maintenance advised there was an internal failure that caused both VHF radios to become inoperative. Research the maintenance records; failure modes; and history of the installed equipment.

Data retrieved from NASA's ASRS site and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.