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Vintage Radio (domestic) Domestic vintage radio (wireless) receivers only. |
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14th Dec 2007, 9:23 pm | #1 |
Pentode
Join Date: Jun 2005
Location: Forres, Moray, UK.
Posts: 194
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DAC90 dropper
I'm thinking of swapping my DAC90 dropper resistor for a capacitor dropper - does anyone who's done this know the correct value for the cap?
Also - is there a consenus on what to do with the asbestos!? -- Tim. |
14th Dec 2007, 9:33 pm | #2 | ||
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Re: DAC90 dropper
Quote:
Quote:
Paul |
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17th Dec 2007, 4:11 pm | #3 | |
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Re: DAC90 dropper
Quote:
The majority of "restored" DAC90s I see in BVWS auctions still have the asbestos in place. |
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17th Dec 2007, 4:20 pm | #4 |
Dekatron
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Location: Bolton, Greater Manchester, UK.
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Re: DAC90 dropper
Agreed Paul. Both of my two DAC90's have the dropper in place too. And three more I had in for repair over the years. There's a lot of panic about droppers and asbestos.
1: The TV set BRC1580 had one, and any mains variation spelt trouble. 2: If the asbestos is good, leave it. If not, then try a ceramic wall tile as a substitute. https://www.vintage-radio.net/forum/...light=Asbestos Here is was suspect. If it's not in yours, then leave it. Cheers, Steve P.
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18th Dec 2007, 3:22 am | #5 |
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Re: DAC90 dropper
Does the DAC90A also have asbestos in the dropper resistor or is it just the DAC90?
Don |
18th Dec 2007, 1:19 pm | #6 |
Heptode
Join Date: Jun 2004
Location: Ilkley, West Yorkshire, UK.
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Re: DAC90 dropper
The DAC90A doesn't have any asbestos around the dropper, this arrangement is just seen in the DAC90.
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Colin Armstrong |
18th Dec 2007, 2:22 pm | #7 | |
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Re: DAC90 dropper
Quote:
As will be seen, the dropper is located further inside the cabinet compared to the 90 and there's no heatshield. |
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18th Dec 2007, 6:13 pm | #8 |
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Re: DAC90 dropper
Colin and Darren, thanks for your replies. I am glad the DAC90A doesn't have any asbestos in it. One less thing to worry about!
Don |
18th Dec 2007, 8:56 pm | #9 |
Pentode
Join Date: Jun 2005
Location: Forres, Moray, UK.
Posts: 194
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Re: DAC90 dropper
Thanks for the info.
I found and followed a suggestion to paint the asbestos with white emulsion - the edges were slightly fibrous, but otherwise it is OK. Its not a 'daily use' set so no capacitor dropper yet. Apart from anything else the set currently has no back and as such is well ventilated at the moment... -- Tim. |