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

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

Emerson DB-296 Kicking My Rear End Hard!
#1

For the last two days I've been trying to get an Emerson DB-296 that I bought last weekend at a swap meet. It didn't play when I purchased it. I've re-capped it, checked the resistors, checked the tubes, etc. etc. etc. I have audio, but little if any signal. I've aligned the IF cans, checked continuity on all coils.

I checked tube voltages and here's what I have:

TUBE = 12SA7
PLATE ACTUAL 95 = RIDERS SAYS IT SHOULD BE = 88
SCREEN ACTUAL 106 = RIDERS SAYS IT SHOULD BE = 88
CATHODE ACTUAL 0 = RIDERS SAYS IT SHOULD BE = 0

TUBE = 12K7 (NO PLATE OR SCREEN VOLTAGE)
PLATE ACTUAL 0 = RIDERS SAYS IT SHOULD BE = 88
SCREEN ACTUAL 0 = RIDERS SAYS IT SHOULD BE = 88
CATHODE ACTUAL 0 = RIDERS SAYS IT SHOULD BE = 0

TUBE = 12SQ7 (REALLY HIGH ON THE CATHODE VOLTAGE)
PLATE ACTUAL 55 = RIDERS SAYS IT SHOULD BE = 30
SCREEN ACTUAL 1.5 = RIDERS SAYS IT SHOULD BE = 0
CATHODE ACTUAL 103 = RIDERS SAYS IT SHOULD BE = 0

TUBE = 50L6
PLATE ACTUAL 86 = RIDERS SHOULD BE = 82
SCREEN ACTUAL 5.4 = RIDERS SAYS IT SHOULD BE = 88
CATHODE ACTUAL 6.0 = RIDERS SAYS IT SHOULD BE = 5.6

Any suggestions would be greatly welcomed!
#2

I always considered it a good and consderate thing when the asking party psts a link to the sch in question intead of sending those trying to help to search for it.

We are willing to help but why make us do the legwork?




Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
Need to purchase some accessories for restoration of my Old Philco Radio
Here is a list of resources found in our online library that you might find useful. Mike's Gobs of Knobs email addres...klondike98 — 01:46 PM
First Radio restoration
Hi Tubeman, Welcome to the Philco Phorum.  Phamily Phriendly Pfun with Phine Pholks Phull of Philco Phacts. (See a p...MrFixr55 — 12:33 PM
First Radio restoration
You could post in the WANTED ADs section here on the Phorum and see if anyone has an RF generator that they want to sell...klondike98 — 11:55 AM
Zenith H725
Good ideas, thank you Arrange and Rich. I have the adhesive aluminum foil already and can try that immediately. More ...EdHolland — 10:18 AM
Graphics for majestic 1050 dial glass.
Murf; I found this thread on the ARF, the first photo has a pretty good view of the dial glass. Regards ArranArran — 01:12 AM
Zenith H725
hello Ed, how about that speacial tape used for ducting it's like foil or how about thin piece of aluminum roof flash...radiorich — 12:19 AM
Zenith H725
Ed; One material that I have seen, but never tried for this was material for making exhaust gaskets, it's similar to ...Arran — 11:42 PM
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

[-]
Who's Online
There are currently no members online.

>