Welcome Guest! Be sure you know and follow the Phorum Rules before posting. Thank you and Enjoy! (January 12) x

Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5

Westinghouse H104
#5

The set has been recapped and most resistors replaced as being out of spec. I shoot for 10%. I have 47s in place of 40 E caps. The grid voltage on 6V6 is +.6 volts. Plates are at 200 volts. Screens are 150 volts. Cathodes are at 8 volts vs 14 volts per the schematic. If I use good (stole from another radio) 6Y6s the grid voltages are 0 volts. Readings are with a VTVM. There is no resistor between the two main caps unless you count the field coil. The field coil is 167 ohms and the drop is 20 volts. So that would be 120ma for 6V6s? With the good 6Y6s the current is 162ma Seems like the 5Y3 is cutting it close. Guess I'll stay with the 5U4.

So why is there +.6 volts on the grids of the 6V6s? The schematic says the grids should be 0 volts. The 6V6s test good.

The 6Y6s are drawing more current so maybe I'd be better off with the 6V6s? AC current is up too. I guess it would be if DC current is higher.


Messages In This Thread
Westinghouse H104 - by dconant - 12-13-2024, 06:32 PM
RE: Westinghouse H104 - by morzh - 12-13-2024, 09:08 PM
RE: Westinghouse H104 - by dconant - 12-14-2024, 12:28 PM
RE: Westinghouse H104 - by TV MAN - 12-14-2024, 01:26 PM
RE: Westinghouse H104 - by dconant - 12-14-2024, 04:01 PM
RE: Westinghouse H104 - by Arran - 12-15-2024, 06:11 AM
RE: Westinghouse H104 - by dconant - 12-15-2024, 10:22 AM
RE: Westinghouse H104 - by MrFixr55 - 01-07-2025, 10:41 PM
RE: Westinghouse H104 - by dconant - 01-08-2025, 09:35 AM
RE: Westinghouse H104 - by radiorich - 01-08-2025, 10:29 AM
RE: Westinghouse H104 - by MrFixr55 - 01-08-2025, 12:35 PM
RE: Westinghouse H104 - by RodB - 01-08-2025, 03:02 PM
RE: Westinghouse H104 - by morzh - 01-08-2025, 03:16 PM
RE: Westinghouse H104 - by MrFixr55 - 01-08-2025, 06:41 PM



Users browsing this thread:
[-]
Recent Posts
Zenith H725
I just remembered, I have some hi temp silicone rubber material which could do the trick. Or a piece of FR4 laminate. Th...EdHolland — 08:39 PM
Zenith H725
The PSU filter cap arrived today (thank you USPS!) so I will work on that later. Meanwhile, I have the dial, speaker...EdHolland — 06:42 PM
Philco 610B oscillator wiring
Thanks Terry. After checking my notes I think I recorded about -10v at the 6A7 G4/control grid. The screen grid (G3 &...Tubester — 05:59 PM
The list of my radio & TV collection!
Magical chords of forgotten melodies, old nostalgic music on an old radio... Saturday night blues on the Mid-Waves on an...RadioSvit — 12:20 PM
Philco 42-345 Restoration/Repair
Thank you MrFixr55 the issue with this radio is that the internal coil antenna is missing and there was a wire in its pl...osanders0311 — 11:34 AM
Philco 610B oscillator wiring
Regarding the oscillator circuit which is comprised of the 6A7's cathode, control grid, and screen grid. These elements ...Radioroslyn — 10:33 AM
Philco 42-345 Restoration/Repair
Hi OSanders, First off, welcome to the Philco Phorum where Phine Phamily-Phriendly Pholks Phull of Philco Phacts and P...MrFixr55 — 08:41 AM
Philco 42-345 Restoration/Repair
Today I've been reading through the site trying to learn more about this radio. I also soldered the lose power cord cabl...osanders0311 — 08:24 PM
Philco 610B oscillator wiring
Thanks David! I do have that same later prodution model 610 schematic. I've also studied the Philco service bulletins fo...Tubester — 08:12 PM
Philco 610B oscillator wiring
Some info from Beitmans says late production. David   David — 06:06 PM

[-]
Who's Online
There are currently 2366 online users. [Complete List]
» 1 Member(s) | 2365 Guest(s)
Avatar

>