Fisher 700-T questions

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Fisher 700-T questions

Ron Ramirez
Silent Key

Posts: 13,776
Threads: 580
Joined: Sep 2005
City: Ferdinand State, Province, Country: Indiana

12-28-2015, 08:04 PM

As I recall, the winding for the dial lamps is 6.3V.

I used some LED replacement fuse lamps in a few of my Fisher receivers before the supplier doubled the price on them and I quit buying them as a result. Anyway, they were designed for use at 6.3V and they work just fine.

I have no idea why you would have two 200 uF electrolytics in parallel at the C17 position. The early manual and a later manual (above serial number 30001) both call for a single 200 uF cap for C17.

If you drop in a tiny LED to replace the dial pointer lamp (which is what I would do if I had to replace one), you might have to adjust the value of R72 plus add a diode in series so that the LED will be happier than by using raw AC.

--
Ron Ramirez
Ferdinand IN

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Fisher 700-T questions - by SolderSplash - 12-21-2015, 02:13 AM

RE: Fisher 700-T questions - by Ron Ramirez - 12-21-2015, 07:08 AM

RE: Fisher 700-T questions - by Ron Ramirez - 12-21-2015, 07:18 AM

RE: Fisher 700-T questions - by John Bartley - 12-21-2015, 08:53 AM

RE: Fisher 700-T questions - by SolderSplash - 12-22-2015, 11:14 AM

RE: Fisher 700-T questions - by SolderSplash - 12-28-2015, 07:52 PM

RE: Fisher 700-T questions - by Ron Ramirez - 12-28-2015, 08:04 PM

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