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#1
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Seeburg C Low Volume
The amp has long volume and I am thinking it is the output transformer. How
does one test to verify it is a faulty transformer? Low volume existed before the amp was capped. So I don't think it is due to caps. |
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#2
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Seeburg C Low Volume
When the amp was recapped, were _all_ the capacitors replaced
including the twist prong cans and axial electrolytics? An open electrolytic in the cathode circuit of the preamp section will cause much lower volume. If you pull out the automatic volume control tube does the sound get much louder? Many times the resistors in these old amplifiers will drift way off value and need to be replaced. Have all the resistors been checked for value? |
#3
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Seeburg C Low Volume
Along with the capacitor stuff just mentioned . It could be the
cartridge . If its been changed it may not match the amp . |
#4
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Seeburg C Low Volume
"wdlanning" wrote in message news The amp has long volume and I am thinking it is the output transformer. How does one test to verify it is a faulty transformer? Low volume existed before the amp was capped. So I don't think it is due to caps. It could be the speaker field coil...might be open......GC |
#5
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Seeburg C Low Volume
All caps replaced and resistors checked. I checked the amp in a working
jukebox and it had low volume whereas the amp in the juke worked properly. This rules out cartridge and mute contacts. Volume control was also replaced. The really weird thing is that the voltages check out OK based on the Seeburg schematic. "wdlanning" wrote in message news The amp has long volume and I am thinking it is the output transformer. How does one test to verify it is a faulty transformer? Low volume existed before the amp was capped. So I don't think it is due to caps. |
#6
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Seeburg C Low Volume
On Jun 28, 9:05*am, "wdlanning" wrote:
All caps replaced and resistors checked. *I checked the amp in a working jukebox and it had low volume whereas the amp in the juke worked properly.. This rules out cartridge and mute contacts. *Volume control was also replaced. *The really weird thing is that the voltages check out OK based on the Seeburg schematic."wdlanning" wrote in message news The amp has long volume and I am thinking it is the output transformer. How does one test to verify it is a faulty transformer? Low volume existed before the amp was capped. *So I don't think it is due to caps.- Hide quoted text - - Show quoted text - Try replacing the 5U4 tube if the amp has one. |
#7
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Seeburg C Low Volume
I have replace all the tubes...twice.
"Dave Beck" wrote in message ... On Jun 28, 9:05 am, "wdlanning" wrote: All caps replaced and resistors checked. I checked the amp in a working jukebox and it had low volume whereas the amp in the juke worked properly. This rules out cartridge and mute contacts. Volume control was also replaced. The really weird thing is that the voltages check out OK based on the Seeburg schematic."wdlanning" wrote in message news The amp has long volume and I am thinking it is the output transformer. How does one test to verify it is a faulty transformer? Low volume existed before the amp was capped. So I don't think it is due to caps.- Hide quoted text - - Show quoted text - Try replacing the 5U4 tube if the amp has one. |
#8
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Seeburg C Low Volume
Have you tried shutting off the jukebox internal speaker and
connecting an external speaker? Tried swapping speakers from a known working juke? |
#9
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Seeburg C Low Volume
Tried different speakers...I tried the amp a working juke.
"Ken Layton" wrote in message ... Have you tried shutting off the jukebox internal speaker and connecting an external speaker? Tried swapping speakers from a known working juke? |
#10
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Seeburg C Low Volume
Then it could only be a miswired part during the rebuild or 2 wires
touching or a wrong resistor installed by mistake . Did you rebuild the amp ? |
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