Quote:
Originally Posted by audion_1908
Quote:
Originally Posted by freya2871
Think you will find its a germanium vision detctor diode.
Steve
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But what type would be a good replacement? or is it not to too fussy? |
Found it the mystery diode is a oa70
the other Service manual from had the info
http://www.radiomuseum.org/r/bush_tv43tv_4.html lists
"In 1953 two types were produced distinguished by the conductivity of the germanium used:
OA70 using higher conductivity germanium designed as a video detector OA50, OA51, OA53, OA55, OA56 and OA61 selected and graded from production"
https://sites.google.com/site/transi...turers/philips
they seem to be selling for £4 with postage for a black OA70? I will have to look up OA70 Equivalents