UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post - Hameg HM307-3 Cleaning and Repair

OldTechFan96 · 5th Jun 2019, 12:16 am

I agree that the next step should be to replace the BD157 and the 741c op amp. Maybe a new socket.

Just been looking at the transistors offered by ESR. They stock BD232 transistors with a Collector-Base Voltage of 500V and a Collector-Emitter Voltage of 300V. Or a BF259?

Are any of these worth trying?

5th Jun 2019, 12:16 am	#65
OldTechFan96 Octode Join Date: Jul 2017 Location: Newcastle Upon Tyne, Tyne & Wear, UK. Posts: 1,186	Re: Hameg HM307-3 Cleaning and Repair I agree that the next step should be to replace the BD157 and the 741c op amp. Maybe a new socket. Just been looking at the transistors offered by ESR. They stock BD232 transistors with a Collector-Base Voltage of 500V and a Collector-Emitter Voltage of 300V. Or a BF259? Are any of these worth trying?