EH Scott Radio Enthusiasts2024-03-29T16:03:47ZY2K Brucehttps://ehscott.ning.com/profile/Brucehttps://storage.ning.com/topology/rest/1.0/file/get/1308634592?profile=RESIZE_48X48&width=48&height=48&crop=1%3A1https://ehscott.ning.com/forum/topic/listForContributor?user=0vhpdmy0p0lbh&feed=yes&xn_auth=noAW 23 amplifier voltages lowtag:ehscott.ning.com,2024-03-27:3925821:Topic:1440222024-03-27T23:36:23.241ZY2K Brucehttps://ehscott.ning.com/profile/Bruce
<p>I have finished replacing capacitors on my AW 23. Radio has been powered up and is working on all but the Green Band. Reception is okay but nothing to brag about.</p>
<p>Now that it is working I started checking voltages and have found most of the readings for the Amplifier are 10 to 20% low. The Service Data shows expected voltage readings while specifying a line voltage of 112 Volts. The document does not indicate which position the Hi/Low switch should be in but since the specified…</p>
<p>I have finished replacing capacitors on my AW 23. Radio has been powered up and is working on all but the Green Band. Reception is okay but nothing to brag about.</p>
<p>Now that it is working I started checking voltages and have found most of the readings for the Amplifier are 10 to 20% low. The Service Data shows expected voltage readings while specifying a line voltage of 112 Volts. The document does not indicate which position the Hi/Low switch should be in but since the specified Voltage is > 110 Volts I have assumed that "Hi" is the correct position.</p>
<p>Filament Voltages are 2.2 VAC and 4.6 VAC compared to the expected 2.5 and 6.5 VAC.</p>
<p>The 2A3 plate Voltage is 253 VDC compared to the expected 310 VDC.</p>
<p>The only Voltage that is near spec is the 2A3 - Bias. It is -62 VDC.</p>
<p>Changing the Hi/Low to the Low setting increased the Voltages slightly but they were still quite low compared to the documentation.</p>
<p>Has anyone seen a similar situation? I don't want to proceed with further investigation into the poor reception issue without first knowing that low filament and plate voltages are not part of the problem.</p> Scott Allwave 23 Dial Lenstag:ehscott.ning.com,2024-03-22:3925821:Topic:1441842024-03-22T03:28:07.950ZY2K Brucehttps://ehscott.ning.com/profile/Bruce
<p>The dial lens on my Scott allwave 23 has become faded and opaque and cracked and needs to be replaced. I see Radio daze has 3 different styles:</p>
<p><a href="https://www.radiodaze.com/dials-plastic-or-phenolic-91/" rel="nofollow">https://www.radiodaze.com/dials-plastic-or-phenolic-91/</a></p>
<p>The one that most closely resembles the dial lens on it at present is described as being for the 5 knob model. However, mine is the 7 knob model (see photo). The other 2 are described as being for…</p>
<p>The dial lens on my Scott allwave 23 has become faded and opaque and cracked and needs to be replaced. I see Radio daze has 3 different styles:</p>
<p><a rel="nofollow" href="https://www.radiodaze.com/dials-plastic-or-phenolic-91/">https://www.radiodaze.com/dials-plastic-or-phenolic-91/</a></p>
<p>The one that most closely resembles the dial lens on it at present is described as being for the 5 knob model. However, mine is the 7 knob model (see photo). The other 2 are described as being for the 7 knob model, one clear and one frosted. So the question is, which one is correct for my radio? This radio was previously owned by another local collector who had done some restoration work on it, I acquired it from his estate, so it's unknown what he may have replaced.<a href="https://storage.ning.com/topology/rest/1.0/file/get/12403308271?profile=original" target="_blank" rel="noopener"><img src="https://storage.ning.com/topology/rest/1.0/file/get/12403308271?profile=RESIZE_710x" class="align-center"/></a></p>
<p></p> Help neededtag:ehscott.ning.com,2024-03-16:3925821:Topic:1441652024-03-16T23:12:10.245ZY2K Brucehttps://ehscott.ning.com/profile/Bruce
Working on all wave 15, no sound or reception. Speaker rebuilt, everything good on speaker.<br />
Looking at schematic I see primary field coil only has 5 volts going to it, is this correct? all tubes are good.<br />
I am used to radios with higher b plus going to the field coil.<br />
What am I missing?
Working on all wave 15, no sound or reception. Speaker rebuilt, everything good on speaker.<br />
Looking at schematic I see primary field coil only has 5 volts going to it, is this correct? all tubes are good.<br />
I am used to radios with higher b plus going to the field coil.<br />
What am I missing? Model 1510 AM FM Tuner - Speaker Connection?tag:ehscott.ning.com,2024-03-16:3925821:Topic:1442652024-03-16T22:53:40.193ZY2K Brucehttps://ehscott.ning.com/profile/Bruce
<p>Maybe someone here can please help me figure out the speaker connection? I have cleaned the knobs, polished and waxed the chassis to include power supply. Tubes tested and some metal ones substituted with glass equivalents. Everything looks very well kept. Minimal corrosion. Maybe one cap replaced in the power supply. I know a lot of members here only accept the older 'real' E H Scott models but for me this is close enough and not overly complex. I don't want shortwave. Anymore of a boat…</p>
<p>Maybe someone here can please help me figure out the speaker connection? I have cleaned the knobs, polished and waxed the chassis to include power supply. Tubes tested and some metal ones substituted with glass equivalents. Everything looks very well kept. Minimal corrosion. Maybe one cap replaced in the power supply. I know a lot of members here only accept the older 'real' E H Scott models but for me this is close enough and not overly complex. I don't want shortwave. Anymore of a boat anchor combo and I would not be able to easily lift them. Thank you - Gary - retired / old vet with minimal technical audio skills.</p> Tiny springs for Anti-backlash gearstag:ehscott.ning.com,2024-03-10:3925821:Topic:1440732024-03-10T10:37:30.901ZY2K Brucehttps://ehscott.ning.com/profile/Bruce
<p>Dear All,</p>
<p>Does anyone have the two tiny springs for the Anti-backlash gears for sale ?</p>
<p>It is for a 1937 Scott Philharmonic Pointer Dial.</p>
<p>Or does anyone know where to get them ?</p>
<p>Also, does anyone have a detailed drawing of the tuning control mechanism ?</p>
<p>Thanks,</p>
<p>Stephan</p>
<p>Dear All,</p>
<p>Does anyone have the two tiny springs for the Anti-backlash gears for sale ?</p>
<p>It is for a 1937 Scott Philharmonic Pointer Dial.</p>
<p>Or does anyone know where to get them ?</p>
<p>Also, does anyone have a detailed drawing of the tuning control mechanism ?</p>
<p>Thanks,</p>
<p>Stephan</p> Chrome paint?tag:ehscott.ning.com,2024-02-27:3925821:Topic:1432642024-02-27T14:16:10.323ZY2K Brucehttps://ehscott.ning.com/profile/Bruce
<p>Has anyone tried using chrome paint on a chassis and parts that have lost their luster due to rust or corrosion? I once saw a brush-on chrome touch up kid offered online, but can't find anything now that doesn't require total immersion of the part in a bath. Thanks</p>
<p></p>
<p>Tom Lager</p>
<p>Has anyone tried using chrome paint on a chassis and parts that have lost their luster due to rust or corrosion? I once saw a brush-on chrome touch up kid offered online, but can't find anything now that doesn't require total immersion of the part in a bath. Thanks</p>
<p></p>
<p>Tom Lager</p> Phantom Deluxe dead oscillator & RF Amptag:ehscott.ning.com,2024-02-20:3925821:Topic:1430402024-02-20T18:36:35.407ZY2K Brucehttps://ehscott.ning.com/profile/Bruce
<p>Hello,</p>
<p> I am trying to bring a dead Phantom Deluxe (AM) back to life. I have 2 problems that are stumping me. First, the RF amp doesn't. It attenuates the incoming signal as evidenced by scope traces on the grid and plate, with the plate trace being a much lower amplitude than the grid. The 6U7 tube tests good on my Hickock 600 tube tester. The whole set has been re-capped and out of spec resistors replaced. Socket voltages on the 6U7 are as follows: Plate +230V reference…</p>
<p>Hello,</p>
<p> I am trying to bring a dead Phantom Deluxe (AM) back to life. I have 2 problems that are stumping me. First, the RF amp doesn't. It attenuates the incoming signal as evidenced by scope traces on the grid and plate, with the plate trace being a much lower amplitude than the grid. The 6U7 tube tests good on my Hickock 600 tube tester. The whole set has been re-capped and out of spec resistors replaced. Socket voltages on the 6U7 are as follows: Plate +230V reference chassis, grid 1 -1.5V reference to cathode, Cathode +6.5 V reference chassis, grids 2& 3 (tied together) +105 V reference chassis. </p>
<p></p>
<p>The oscillator, 6J5 voltages are as follows: Plate +150V reference chassis, Grid +4V reference Cathode and 0V reference chassis, Cathode +4.8V reference chassis. My frequency meter and scope measure no output from the oscillator. </p>
<p></p>
<p>I am fairly certain that the converter works since I can tune in stations by injecting an unmodulated signal at the grid of the 6L7 at a frequency 455KHz above the desired tuned frequency.</p>
<p>Your thoughts? Thanks</p>
<p></p>
<p>Tom</p> Allwave 23 tuning meter wantedtag:ehscott.ning.com,2024-02-16:3925821:Topic:1428402024-02-16T23:55:15.776ZY2K Brucehttps://ehscott.ning.com/profile/Bruce
<p>Hello,</p>
<p>Looking for an Allwave 23 tuning meter.</p>
<p>Thanks</p>
<p>John</p>
<p>Hello,</p>
<p>Looking for an Allwave 23 tuning meter.</p>
<p>Thanks</p>
<p>John</p> AW 23 Band Selector Pointer Knob neededtag:ehscott.ning.com,2024-02-12:3925821:Topic:1429202024-02-12T22:35:06.110ZY2K Brucehttps://ehscott.ning.com/profile/Bruce
<p>I am just starting restoration of an AW23 7 knob with Tasman cabinet.</p>
<p>It looks like a very complete unit with the exception of the metal band selector pointer knob. </p>
<p>Are there reproductions of this part or does someone have one to sell? </p>
<p>I am just starting restoration of an AW23 7 knob with Tasman cabinet.</p>
<p>It looks like a very complete unit with the exception of the metal band selector pointer knob. </p>
<p>Are there reproductions of this part or does someone have one to sell? </p> Problem with Philharmonic.tag:ehscott.ning.com,2024-02-07:3925821:Topic:1426372024-02-07T16:18:07.637ZY2K Brucehttps://ehscott.ning.com/profile/Bruce
<p>I know it’s notoriously difficult to diagnose faults remotely, but I’m a bit stumped and so decided to ask. My philharmonic has developed this problem: essentially, it’s behaving as if it hasn’t got a good aerial when in fact it has- ie poor sensitivity and poor signal to noise ratio. However if I beam a signal to it from an SS tran AMT3000 transmitter, it works very well. Any thoughts?</p>
<p>I know it’s notoriously difficult to diagnose faults remotely, but I’m a bit stumped and so decided to ask. My philharmonic has developed this problem: essentially, it’s behaving as if it hasn’t got a good aerial when in fact it has- ie poor sensitivity and poor signal to noise ratio. However if I beam a signal to it from an SS tran AMT3000 transmitter, it works very well. Any thoughts?</p>