Posts: 365
Threads: 76
Joined: Oct 2014
City: Winter Haven, FL
I just started rebuilding a Silvertone 101.614 chassis. The triple capacitor metal can is missing, and I know I can just replace it with three individual caps, but the three dial lamps are missing also. Does anyone know what type bulbs these are? The schematic is really hard to read. It looks like it says type 66, but I cannot find any reference to a type 66 bulb. It will be a while before I can actually power it up, so I just wanted to replace the lamps first.
Thanks in advance.
Pat
Posts: 1,562
Threads: 56
Joined: Nov 2008
City: Sedona, AZ/Placentia/CA
Pat, it really helps to post a picture of the radio or at least a link to the schematic so we can help.
Jerry
A friend in need is a pest! Bill Slee ca 1970.
Posts: 205
Threads: 6
Joined: Jun 2006
City: Moundsville
State, Province, Country: WV
Pat,
After looking at a magnified schematic, I believe the dial lamp is a #44.
Carl
Northern Panhandle, WV
Posts: 365
Threads: 76
Joined: Oct 2014
City: Winter Haven, FL
(10-17-2014, 06:54 PM)jerryhawthorne Wrote: Pat, it really helps to post a picture of the radio or at least a link to the schematic so we can help.
Jerry
Sorry Jerry,
Here's the only schematic I could find.
Posts: 365
Threads: 76
Joined: Oct 2014
City: Winter Haven, FL
(10-17-2014, 07:24 PM)Carl Travis Wrote: Pat,
After looking at a magnified schematic, I believe the dial lamp is a #44.
Thanks Carl,
I'll go with that. But now, I've run into another problem, thanks to an unreadable schematic.
The schematic shows two line-to-ground caps, C45 and C46. However, the chassis has one across-the-line cap, .01 @ 600V. Can I replace that with an X2 safety cap, AND and two .01 Y2 caps as well? Or should I just remove the across-the-line cap and add two line-to-ground caps, as the schematic indicates?
Pat
Posts: 7,296
Threads: 268
Joined: Dec 2009
City: Roslyn Pa
If indeed it is a 44 bulb you may want to use a 47. It runs a bit cooler. Some sets have the bulb very close to plastics dial which can be problematic. You may have seen sets with brown or black marks on the dial. Those can be burn marks from the bulb.
The voltage for the bulb is usually connected in parallel off of the heater winding on the power transformer. Where you could run in to problem is if your set powered the bulb off of the AC line though a balist tube or the heaters strung in series. Your set doesn't. In this type of circuit the voltage and current are very important. Wrong bulb can burned out( usually very quickly), damage the balist tube or other tube in that heater circuit
GL
Terry
Posts: 365
Threads: 76
Joined: Oct 2014
City: Winter Haven, FL
(10-17-2014, 07:57 PM)Radioroslyn Wrote: If indeed it is a 44 bulb you may want to use a 47. It runs a bit cooler. Some sets have the bulb very close to plastics dial which can be problematic. You may have seen sets with brown or black marks on the dial. Those can be burn marks from the bulb.
The voltage for the bulb is usually connected in parallel off of the heater winding on the power transformer. Where you could run in to problem is if your set powered the bulb off of the AC line though a balist tube or the heaters strung in series. Your set doesn't. In this type of circuit the voltage and current are very important. Wrong bulb can burned out( usually very quickly), damage the balist tube or other tube in that heater circuit
GL
Terry Even though the schematic doesn't show it, I've got three lamps in series off of the heater windings. Still use #47?
Pat
Posts: 1,562
Threads: 56
Joined: Nov 2008
City: Sedona, AZ/Placentia/CA
Pat, I would follow the schematic and replace the line input with two .01mfd either "Y" or "XY" caps as indicated. Replace the existing one across the A/C line. These should be "safety caps" used in this position. They will not fail shorted which is nice across the A/C line. Many people just remove them totally. It won't hurt the radio but may increase the noise from A/C line problems.
Best, Jerry
A friend in need is a pest! Bill Slee ca 1970.
Posts: 365
Threads: 76
Joined: Oct 2014
City: Winter Haven, FL
(10-17-2014, 08:22 PM)jerryhawthorne Wrote: Pat, I would follow the schematic and replace the line input with two .01mfd either "Y" or "XY" caps as indicated. Replace the existing one across the A/C line. These should be "safety caps" used in this position. They will not fail shorted which is nice across the A/C line. Many people just remove them totally. It won't hurt the radio but may increase the noise from A/C line problems.
Best, Jerry
Thanks Jerry,
Just the answer I was looking for.
Pat
Posts: 7,296
Threads: 268
Joined: Dec 2009
City: Roslyn Pa
Hey Pat
Are you sure the bulbs are in series?? That would mean that each bulb would have to be rated @ 2v each.
Terry
Posts: 365
Threads: 76
Joined: Oct 2014
City: Winter Haven, FL
(10-18-2014, 08:33 AM)Radioroslyn Wrote: Hey Pat
Are you sure the bulbs are in series?? That would mean that each bulb would have to be rated @ 2v each.
Terry
My error, Terry.
Maybe I need to change my medication. They are in parallel.
Pat
Users browsing this thread: 1 Guest(s)
|
|
Recent Posts
|
|
Philco model #20
|
| AHH HA , I got it and can’t thank you fellows enough , when I changed the capacitors I took the advice and did not unsol...onlyrick — 02:24 PM |
|
Zenith H725
|
| Hello Ed,
yes, I like letting projects run for few days to make sure they don't start acting up .
Sincerely Richardradiorich — 01:03 PM |
|
Philco 46-480 Electronic Restoration
|
| I am almost finished with this restoration. All which remains is the power transformer. I cleaned it up some time ago, b...jrblasde — 12:41 PM |
|
Philco model #20
|
| I seem to recall in some TRF sets there being a Local/Distance toggle switch that removes the B+ from the first 24 rf tu...RodB — 09:46 AM |
|
Refinishing Ideas
|
| Hi Doppelganger,
After rereading your thread, did you mount the Zenith speakers in the two bottom left and right pos...MrFixr55 — 09:39 AM |
|
Philco model #20
|
| Hi Rick,
One other thing regarding volume on this set. Make sure that the tube shield is in place. this is that la...MrFixr55 — 08:22 AM |
|
Philco model #20
|
| Hi Rick,
The volume control on the Model 20 has 2 sections and does 2 seperate things:
One part of the control, ...MrFixr55 — 10:30 PM |
|
Philco model #20
|
| Hello again fellows , well I powered up the set this evening after I had changed every cap and resistor in this set and ...onlyrick — 09:34 PM |
|
Zenith H725
|
| Yes - better it happened on the repair bench than returning to the owner.
The other question is - do I also dissect a...EdHolland — 09:08 PM |
|
Zenith H725
|
| That's a bummer but get them now. Paul BPaul Philco322 — 08:27 PM |
|
Who's Online
|
There are currently 717 online users. [Complete List]
» 3 Member(s) | 714 Guest(s)
|
|
|
|
 
|
![[-]](https://philcoradio.com/phorum/images/bootbb/collapse.png "[-]")
