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Vintage Radio (domestic) Domestic vintage radio (wireless) receivers only. |
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16th Sep 2017, 8:02 pm | #1 |
Retired Dormant Member
Join Date: Sep 2017
Location: Merseyside, UK.
Posts: 9
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Murphy U198m
Hi
I have a Murphy U198m all looks good but 2 of the lugs on the mains dropper resistor have snapped off. Part no 63574 R21 944 ohm R22 168 ohm 5% 25w R23 160 ohm can anyone help with a replacement or alternative fix. Thanks Bart. |
16th Sep 2017, 8:18 pm | #2 |
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Location: Oxford, UK
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Re: Murphy U198m
What exactly do you mean when you say the lugs have snapped off?
Your main options are: 1. Mend the existing dropper 2. Replace it with another dropper from a scrap set 3. Modify the radio to use a capacitor dropper 4. Modify it to use a diode dropper The dropper is a standard value and many members will have one in the junk box. For basic info on a cap/diode conversion see this old article by Paul Stenning: http://www.vintage-radio.com/repair-...per-calcs.html |
16th Sep 2017, 8:40 pm | #3 |
Retired Dormant Member
Join Date: Sep 2017
Location: Merseyside, UK.
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Re: Murphy U198m
The Tabs/ lugs the wires connect to have snapped with only a small piece of lug remaining not enough to attach wire to.
Thanks for your help. |
16th Sep 2017, 10:05 pm | #4 |
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Join Date: Dec 2013
Location: Middlewich, Cheshire, UK. & Winter in the Philippines.
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Re: Murphy U198m
Wrap a small hose clip around the dropper at the tag position to get a contact.
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16th Sep 2017, 10:16 pm | #5 |
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Location: Oxford, UK
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Re: Murphy U198m
Yes, you should be able to replace it with a Jubilee clip. I think Poundland sell them.
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17th Sep 2017, 4:51 pm | #6 |
Retired Dormant Member
Join Date: Sep 2017
Location: Merseyside, UK.
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Re: Murphy U198m
ok thanks will try latter thanks for the help.
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19th Sep 2017, 7:19 pm | #7 |
Retired Dormant Member
Join Date: Sep 2017
Location: Merseyside, UK.
Posts: 9
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Re: Murphy U198m
Just an update got radio working. Thanks for all your help just need to re cord tuner then put it back in case and give it a good polish.
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19th Sep 2017, 7:23 pm | #8 |
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Join Date: Jun 2003
Location: Oxford, UK
Posts: 27,937
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Re: Murphy U198m
These radios work well once sorted out, though my U598 (U198 in a fur coat) has a bit of modulation hum.
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19th Sep 2017, 7:40 pm | #9 |
Retired Dormant Member
Join Date: Sep 2017
Location: Merseyside, UK.
Posts: 9
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Re: Murphy U198m
Thanks again for your time I am new to this hobby so its a steep learning curve do you know of any good books for me to read.
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