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Philco 18 changes
#5

DKinYORKpa Wrote:Except on mine, they put all three (8/10/10) in one can.

No, they didn't - not at the factory, anyway. There are - or, should I say, were - two aluminum electrolytic cans held on top of the chassis by a metal strap, bracket and screw. These are capacitors (53) and (54).

An under-chassis view will help:

[Image: http://i326.photobucket.com/albums/k420/...9c3ddd.jpg]

(53) was 8 uF, 400 WVDC (6706).
(54) was 8 uF, 450 WVDC (30-2025).
(55) was 10 uF, 50 WVDC (30-2003).

Notice also capacitor (40), mounted at the left side of the drawing? It was 1 uF, 1 uF and 2 uF, all 300 WVDC (30-2029).

DKinYORKpa Wrote:Because the hole on the chassis for part#55, that had the 10mfd positive to chassis ground, is empty and has no mounting shadow.

Refer to the drawing above. In early production of the 18, capacitor (55) is separate and mounted off to the right, under the power transformer.

Later in production of the 18 - November 15, 1933 to be exact - Philco combined capacitors (53) and (55) in one package, eliminating the separate (55). Your set has no sign of ever having a (55) mounted on the chassis because it was built on or after 11/15/1933.

Now, look at the drawing below and notice the change.

[Image: http://i326.photobucket.com/albums/k420/...9e05d8.jpg]

The new combination (53) and (55) is Part No. 30-2045, and contains a single 8 uF @ 450 WVDC and a single 10 uF, 50 WVDC.

DKinYORKpa Wrote:So then that 3 part can was replaced with the Solar 20/20/20.

No, Philco did not install a 20/20/20 Solar cap at the factory. They installed part no. 30-2029 (1/1/2 uF) as shown in the drawings above - part (40).

What some repairman did after the set left the factory cannot be explained by factory documentation. What I have given you are the facts on how Philco originally installed the electrolytics. You have to take this information, compare it to the current condition of your set, and repair accordingly.

--
Ron Ramirez
Ferdinand IN


Messages In This Thread
Philco 18 changes - by DKinYORKpa - 01-09-2013, 12:15 PM
RE: Philco 18 changes - by DKinYORKpa - 01-10-2013, 07:40 AM
RE: Philco 18 changes - by Ron Ramirez - 01-10-2013, 07:45 AM
RE: Philco 18 changes - by DKinYORKpa - 01-10-2013, 05:14 PM
RE: Philco 18 changes - by Ron Ramirez - 01-10-2013, 06:55 PM
RE: Philco 18 changes - by DKinYORKpa - 01-10-2013, 07:23 PM
RE: Philco 18 changes - by Ron Ramirez - 01-10-2013, 07:27 PM
RE: Philco 18 changes - by DKinYORKpa - 01-10-2013, 07:40 PM
RE: Philco 18 changes - by Ron Ramirez - 01-10-2013, 07:58 PM
RE: Philco 18 changes - by TA Forbes - 01-10-2013, 10:54 PM



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