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Model 16X - Problem With Radio Reception
#6

Sonny, you haven't answered this question yet:
Quote:Code 222? I've never heard of such a thing. Is this 16 an export model, or other than a USA set?

After spending an hour looking through my copy of the Philco Changes in Models package (available here as a free download to registered Phorum members), various Philco parts catalogs, etc., and not finding a 30-2067, I finally found the note in Rider's volume IV, Philco page 4-8.

That change applied only to Model 16A, a 25 cycle AC version of Model 16. Also, the replacement 30-2067 could not possibly have been rated at only 15 volts. It would have blown sky high as soon as power was applied and it was hit with rippling DC on the order of 400 or more volts!

Now, condensers (75) and ( 88 ) were replaced by a single condenser, part no. 30-2045 in the Baby Grand model, and 30-2046 in the console and chairside models. This is a two-section condenser with two positive terminals. Condenser 30-2045 contained an 8 uF, 450 volt cap and a 10 uF, 50 volt cap. Part 30-2046 is the same except the 8 uF section is rated at 475 volts.

The positive terminal of the 10 uF, 50 volt section of this cap connects to chassis ground. This is important! The positive terminal of the 8 uF section (which you can replace with a 10 uF, 450 or 500 volt electrolytic, depending on what you are working on) connects as condenser ( 88 ) did originally.

Now let's examine the two 30-4020 caps. Did one end of each of these two caps originally connect to ground? When you replace a component, you must connect it to the same points in the circuit as the original, and never assume anything.

--
Ron Ramirez
Ferdinand IN


Messages In This Thread
Re: Problem With Radio Reception - by Ron Ramirez - 02-02-2011, 10:49 AM
Re: Problem With Radio Reception - by Sonnyboy - 02-02-2011, 06:30 PM
Re: Problem With Radio Reception - by Ron Ramirez - 02-02-2011, 08:13 PM
Re: Problem With Radio Reception - by Sonnyboy - 02-05-2011, 11:19 AM
Re: Problem With Radio Reception - by Ron Ramirez - 02-05-2011, 01:05 PM
Re: Problem With Radio Reception - by Sonnyboy - 02-06-2011, 10:53 AM



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