08-10-2019, 06:35 PM
I acquired a philco 40-185 recently in original condition. The previous owner said he plugged it in and the light came on but it hummed. I brought it home and took the chassis out. (This is my second restoration.)
nyway, I replaced all the old paper caps and the two electrolytics (and a few resistors that tested badly). I added a fast blow inline fuse. I replaced the AC line with a modern cord. I rebuilt the bakelite block with two .01 mfd safety caps.
I have it all put back together and tested it with a dim bulb tester, but no dial lamp and no light at all on the “dim bulb”. I can confirm there is 120v coming in the main (hot) line which enters the chassis, goes across the fuse then to the bakelite block, then to the on-off switch and back to the AC transformer. There is 120v all the way to the transformer line on the on-off switch. The neutral goes directly to a bakelite block. No tubes are glowing. No dial light.
Now, I’m stuck. What should I look for next to determine the problem?
nyway, I replaced all the old paper caps and the two electrolytics (and a few resistors that tested badly). I added a fast blow inline fuse. I replaced the AC line with a modern cord. I rebuilt the bakelite block with two .01 mfd safety caps.
I have it all put back together and tested it with a dim bulb tester, but no dial lamp and no light at all on the “dim bulb”. I can confirm there is 120v coming in the main (hot) line which enters the chassis, goes across the fuse then to the bakelite block, then to the on-off switch and back to the AC transformer. There is 120v all the way to the transformer line on the on-off switch. The neutral goes directly to a bakelite block. No tubes are glowing. No dial light.
Now, I’m stuck. What should I look for next to determine the problem?
