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Philco 40-155
rogerh
Junior Member
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Posts: 7
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Joined: Aug 2023
City: Kenmore State, Province, Country: Washington
#6

Yesterday, 06:05 PM
Thank you for the thorough answer and explaination!

The radio sticker on the inside of the cabinet states 7J7, seems like it's likely that someone put a different chassis in the cabinet. I was wrong saying that the radio had a 6K8 installed, it has a 6K7 installed. Would performance be better if I installed a 7j7, or would the difference be slight?

I did thoroughly go through the amplifier section replacing the resistors and capacitors since the values of the resistors had drifted more than 20%. To compensate for a pm speaker I installed a 1k ohm resister and bumped the second capacitor to 47K'. Also added bluetooth but I injected the signal to the volume control and ground. Would be interested in how you would connect.

So Philco didn't release a schematic showing the 6k7 installed instead of the 7j7?
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Messages In This Thread
Philco 40-155 - by rogerh - 01-12-2025, 07:45 PM
RE: Philco 40-155 - by GarySP - 01-12-2025, 08:01 PM
RE: Philco 40-155 - by rogerh - 01-12-2025, 08:09 PM
RE: Philco 40-155 - by GarySP - 01-12-2025, 10:34 PM
RE: Philco 40-155 - by MrFixr55 - 01-12-2025, 10:54 PM
RE: Philco 40-155 - by rogerh - Yesterday, 06:05 PM
RE: Philco 40-155 - by MrFixr55 - 9 hours ago
RE: Philco 40-155 - by rogerh - 3 hours ago



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