UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post - Weird fault on Akkord Pinguin K58 battery/mains portable.

Tim · 12th Mar 2009, 7:15 pm

Thanks everyone.
Diagram supplied above seems to be right.
No progress today, set can only be made to work by connecting point shown in diagram below to chassis via 200 ohm resistor. It works, but I don't know why!
It does this with or without subsitute diode.

Seems to be stable,HT is correct and nothing is getting hot. Will investigate DL96 grid pin ASAP.
All electrolytics in PSU OK, including the 50uF.(checked by subsitution)
Anyone got any ideas, while I still have some hair!!

12th Mar 2009, 7:15 pm	#15
Tim Dekatron Join Date: Jan 2003 Location: Bradford on Avon, Wiltshire, UK. Posts: 3,310	Re: Weird fault on Akkord Pinguin K58 battery/mains portable. Thanks everyone. Diagram supplied above seems to be right. No progress today, set can only be made to work by connecting point shown in diagram below to chassis via 200 ohm resistor. It works, but I don't know why! It does this with or without subsitute diode. Seems to be stable,HT is correct and nothing is getting hot. Will investigate DL96 grid pin ASAP. All electrolytics in PSU OK, including the 50uF.(checked by subsitution) Anyone got any ideas, while I still have some hair!! Attached Thumbnails __________________ "Nothing is as dangerous as being too modern;one is apt to grow old fashioned quite suddenly."