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| Vintage Test Gear and Workshop Equipment For discussions about vintage test gear and workshop equipment such as coil winders. |
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Thread Tools |
27th Aug 2019, 3:00 pm
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#1 |
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Retired Dormant Member
Join Date: Aug 2013
Location: Cyclades kini Syros Greece
Posts: 19
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Marconi 2955R repair.
Photos from repair and inspection of OM345 modules
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27th Aug 2019, 10:19 pm
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#2 |
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Retired Dormant Member
Join Date: Aug 2013
Location: Cyclades kini Syros Greece
Posts: 19
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Re: Marconi 2955R repair.
33R serial resistor
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31st Aug 2019, 2:41 pm
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#3 |
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Retired Dormant Member
Join Date: Aug 2013
Location: Cyclades kini Syros Greece
Posts: 19
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Re: Marconi 2955R repair.
Difference between Marconi’s
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31st Aug 2019, 2:45 pm
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#4 |
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Retired Dormant Member
Join Date: Aug 2013
Location: Cyclades kini Syros Greece
Posts: 19
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Re: Marconi 2955R repair.
next
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31st Aug 2019, 2:45 pm
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#5 |
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Nonode
Join Date: Aug 2010
Location: Resolven, Wales; and Bristol, England
Posts: 2,608
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Re: Marconi 2955R repair.
Interesting! How did you remove the potting compound?
Are the ones in the last picture #1 new modules you made?
__________________
Richard Index: recursive loop: see recursive loop |
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31st Aug 2019, 2:51 pm
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#6 |
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Retired Dormant Member
Join Date: Aug 2013
Location: Cyclades kini Syros Greece
Posts: 19
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Re: Marconi 2955R repair.
from marconi 2955R
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31st Aug 2019, 2:54 pm
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#7 |
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Retired Dormant Member
Join Date: Aug 2013
Location: Cyclades kini Syros Greece
Posts: 19
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Re: Marconi 2955R repair.
Sensitive receiver marconi 2955R
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31st Aug 2019, 3:00 pm
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#8 |
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Retired Dormant Member
Join Date: Aug 2013
Location: Cyclades kini Syros Greece
Posts: 19
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Re: Marconi 2955R repair.
Magnifying glasses and sharp knife. I replaced all the materials with new ones, I used BFR93 for transistor.
Some had problems with the R3 |
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31st Aug 2019, 3:25 pm
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#9 |
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Retired Dormant Member
Join Date: Aug 2013
Location: Cyclades kini Syros Greece
Posts: 19
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Re: Marconi 2955R repair.
These are the measurements with no component on the board
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31st Aug 2019, 3:55 pm
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#10 |
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Nonode
Join Date: Aug 2010
Location: Resolven, Wales; and Bristol, England
Posts: 2,608
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Re: Marconi 2955R repair.
Excellent detail and information, thank you. I have a couple of those modules that I need to repair.
__________________
Richard Index: recursive loop: see recursive loop |
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