EH Scott Radio Enthusiasts

The Fine Things are Always Hand Made

Day Radebaugh
  • Male
  • El Dorado, KS
  • United States
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Newbie with an 800B

Started this discussion. Last reply by Day Radebaugh Dec 18, 2018. 95 Replies

Hello:I'm Day Radebaugh from El Dorado, Kansas, and was happy to find this site.  30 years ago, when I was a starving student, I lived in a house in Baltimore that was in the process of being sold. …Continue

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Day Radebaugh replied to Day Radebaugh's discussion Newbie with an 800B
"Would a newbie like me be able to get the units down on the bench, turn it on, and check voltages for various components?  Is that the way one would go about troubleshooting?"
Dec 18, 2018
Day Radebaugh replied to Day Radebaugh's discussion Newbie with an 800B
"Thanks.  That tells me how to get going on this issue."
Dec 18, 2018
Kent King replied to Day Radebaugh's discussion Newbie with an 800B
"Yes, those create the B+ voltage. But the tubes are seldom the issue...there are capacitors and resistors much more likely to be at fault."
Dec 18, 2018
Day Radebaugh replied to Day Radebaugh's discussion Newbie with an 800B
"I read the circuit description and studied the schematic.  Although B+ is not mentioned specifically, my guess is that the symptoms I reported implicate the rectifier tubes v23 and V24 and filter V22 in the power supply.  Does this seem…"
Dec 18, 2018
Kent King replied to Day Radebaugh's discussion Newbie with an 800B
"Did you check the fuse? It's probably ok since the relays are working. Sounds like the B+ is gone, shouldn't be a difficult fix..."
Dec 17, 2018
Kent King replied to Day Radebaugh's discussion Newbie with an 800B
"Bob - That's just a jumper on the speaker plug, easily bypassed, as long as you have a substitute load and field. - Kent"
Dec 17, 2018
Bob Bell replied to Day Radebaugh's discussion Newbie with an 800B
"The speaker - on my unit anyway - is wired in such a way that the unit cannot be turned on without it being connected. In other words, having the speaker connected completes the power circuit.  Bob"
Dec 17, 2018
Day Radebaugh replied to Day Radebaugh's discussion Newbie with an 800B
"Turned on the 800B the other day, the relays came on, magic eyes started to light up, then everything went dark.  Relays still work, but magic eyes won't light up. Here is my question: I have to take the unit for servicing, but it will be…"
Dec 17, 2018
Day Radebaugh replied to Day Radebaugh's discussion Newbie with an 800B
"Have had the radio on for about 4 hrs on local FM.  Tuning has not drifted appreciably, and sound is wonderful.  A truly impressive performance for 70+ years old."
Nov 6, 2018
Day Radebaugh replied to Day Radebaugh's discussion Newbie with an 800B
"Replaced the tubes, and the sound is clearly bigger and more full.  The 6L6's they replaced looked rather new, and were labelled Tung-Sol 6L6WGB, although I could not find a date."
Nov 5, 2018
Day Radebaugh replied to Day Radebaugh's discussion Newbie with an 800B
"TungSol KT-66's arrived.  Can I plug them in and turn it on?  Any biasing necessary?"
Oct 29, 2018
Day Radebaugh replied to Day Radebaugh's discussion Newbie with an 800B
"Ordered my TungSol KT-66's.  I'll let you know how they sound.  This radio kicks butt as it is, but this should be interesting."
Oct 25, 2018
Day Radebaugh replied to Day Radebaugh's discussion Newbie with an 800B
"Bob: My first approach here would be to narrow the problem down to either aerial or radio.  I'd hook up a basic FM dipole to the FM leads and see if you get anything out of the radio.  Do you have an old Radio Shack FM dipole…"
Oct 25, 2018
Day Radebaugh replied to Day Radebaugh's discussion Newbie with an 800B
"Bob: My first approach here would be to narrow the problem down to either aerial or radio.  I'd hook up a basic FM dipole to the FM leads and see if you get anything out of the radio.  Do you have an old Radio Shack FM dipole…"
Oct 25, 2018
Bob Bell replied to Day Radebaugh's discussion Newbie with an 800B
"Hmmm ... I live in Oakland and we have cable TV. For radio I really only listen to FM, as AM appears to feature only zealots of differing shades, be they of religious, political or sports bent. I have several old loops lying around from the backs of…"
Oct 24, 2018
Day Radebaugh replied to Day Radebaugh's discussion Newbie with an 800B
"Many thanks.  Ready to pull the trigger on this one, and I will monitor temps on that tranny, and let you know.  "
Oct 24, 2018

Comment Wall (2 comments)

At 9:31pm on January 14, 2018, Dave said…

Day I have a shallow PM Scott speaker to trade if so desired

Dave....please post me direct acat40@gmail.com

At 9:33pm on January 14, 2018, Dave said…

See above Day

Dave

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