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Sherwood S-3000 III
Hi Ed, et al, I have a mono unit with the plug. If I understand your question correctly the plug is very simple and mostly provides protection for the high voltage taps. If you look at the SAM's schem
Hi Ed, et al, I have a mono unit with the plug. If I understand your question correctly the plug is very simple and mostly provides protection for the high voltage taps. If you look at the SAM's schem
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John Carpanini
· #66132
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Sherwood S-3000 III
Evenin guys, I have 2 early IIIs SN3016186 & 3015614, internal layout on both is the same & both have the AFC/FB On, Off switch. I believe I was the one who asked what the "FB" abbreviation actually s
Evenin guys, I have 2 early IIIs SN3016186 & 3015614, internal layout on both is the same & both have the AFC/FB On, Off switch. I believe I was the one who asked what the "FB" abbreviation actually s
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By
John Carpanini
· #66157
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Sansui TU-919 Thin midrange
Hi and Welcome to the group. The 919 is a very good candidate for mods. Easy to work on and rewards you with great sound when gone through. If you're looking for someone to do the mods, and who typica
Hi and Welcome to the group. The 919 is a very good candidate for mods. Easy to work on and rewards you with great sound when gone through. If you're looking for someone to do the mods, and who typica
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By
John Carpanini
· #66178
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Kenwood KT-7500 restomod : blue,green LEDs, power supply upgrade, recap
Hi Don, The Mitsubishi DA-F30 does exactly that. It actually has 3 colors, if I remember correctly, Stereo, Mono, & Mute Regards JohnC
Hi Don, The Mitsubishi DA-F30 does exactly that. It actually has 3 colors, if I remember correctly, Stereo, Mono, & Mute Regards JohnC
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By
John Carpanini
· #66242
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Future shoot outs?
Hi 2channel, The 2600 received a fair amount of attention starting with message # 61885, that may provide some additional information for you. I still have mine and it is quite sensitive and after mod
Hi 2channel, The 2600 received a fair amount of attention starting with message # 61885, that may provide some additional information for you. I still have mine and it is quite sensitive and after mod
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By
John Carpanini
· #66336
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Tuner "X" Sat 8/11 Shersood McIntosh
Evenin all, I believe there's some confusion here. Both the IV & V used solid state diode bridge based de-multiplexers. What was tube based were the detectors in the IV which transitioned to the solid
Evenin all, I believe there's some confusion here. Both the IV & V used solid state diode bridge based de-multiplexers. What was tube based were the detectors in the IV which transitioned to the solid
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By
John Carpanini
· #66441
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Denon Digital Tuners
Evening all, With RFM adding the seriously overlooked TU-660 to the Denon Digital discussion here's some additional information. TU-460, 1989 – 2 ceramic filters – Single Band – 3 equivalent gangs. LA
Evening all, With RFM adding the seriously overlooked TU-660 to the Denon Digital discussion here's some additional information. TU-460, 1989 – 2 ceramic filters – Single Band – 3 equivalent gangs. LA
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By
John Carpanini
· #66488
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Denon Digital Tuners
Evenin again, A small correction, I miscounted the equivalent gangs in the 800, bad JohnC bad. Both the 660 & 800 both come in at 4 gangs, both having 2 varactors in the LO, thus making both FEs the s
Evenin again, A small correction, I miscounted the equivalent gangs in the 800, bad JohnC bad. Both the 660 & 800 both come in at 4 gangs, both having 2 varactors in the LO, thus making both FEs the s
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By
John Carpanini
· #66492
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Sansui TU-X711 - more info please
Hi Nick, A couple of bits of information first. According to the service manual the X701 & the X711 are identical tuners, circuit wise, with only cosmetic changes between the two. There is a remarkabl
Hi Nick, A couple of bits of information first. According to the service manual the X701 & the X711 are identical tuners, circuit wise, with only cosmetic changes between the two. There is a remarkabl
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By
John Carpanini
· #66671
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Denon TU-800
Hi folks, A few weeks ago Bob queried the group to see if anyone had modded a TU 800 and if they had any suggestions. The silence was deafening, to me it sounded like an opportunity. I had just gotten
Hi folks, A few weeks ago Bob queried the group to see if anyone had modded a TU 800 and if they had any suggestions. The silence was deafening, to me it sounded like an opportunity. I had just gotten
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By
John Carpanini
· #66788
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Denon TU-800
Hi Nick, There are some differences that are identified on the schematic, which is available over on the TIC. After a quick look I can see the following: Different transformer to accommodate 220V Hard
Hi Nick, There are some differences that are identified on the schematic, which is available over on the TIC. After a quick look I can see the following: Different transformer to accommodate 220V Hard
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By
John Carpanini
· #66811
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Denon TU-800
Nick, My bad, the schematic is here: TU 800 Schematic JohnC
Nick, My bad, the schematic is here: TU 800 Schematic JohnC
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By
John Carpanini
· #66812
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Mitsubishi DF20 Question
Hi kd7brd, Yes, C221 is the only bi-polar, a Nichicon Muse ES works well there, that's in the Composite Signal Path. For C401/501 if I was doing it today, I would use a film cap, say a Panasonic ECW-F
Hi kd7brd, Yes, C221 is the only bi-polar, a Nichicon Muse ES works well there, that's in the Composite Signal Path. For C401/501 if I was doing it today, I would use a film cap, say a Panasonic ECW-F
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John Carpanini
· #66902
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Mitsubishi DF20 Question
Hi kd7brd, R410/510 - Change 33K to 12K if you want to boost the gain at the fixed outputs. Try the Vishay/Dale 1/4W PN CMF5512K100FHEK Mouser PN 71-CMF5512K100FHEK or Vishay Dale 1/2W CMF6012K100FHEK
Hi kd7brd, R410/510 - Change 33K to 12K if you want to boost the gain at the fixed outputs. Try the Vishay/Dale 1/4W PN CMF5512K100FHEK Mouser PN 71-CMF5512K100FHEK or Vishay Dale 1/2W CMF6012K100FHEK
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By
John Carpanini
· #66912
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DA-F20 extra part?
Hi John, I pulled the bottom cover on mine and there are 2 ceramic disc caps located under the front end. With the tuner bottom up and the front facing away the 2 caps are in the lower right corner, o
Hi John, I pulled the bottom cover on mine and there are 2 ceramic disc caps located under the front end. With the tuner bottom up and the front facing away the 2 caps are in the lower right corner, o
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By
John Carpanini
· #66979
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DA-F20 extra part?
John, While you're in there make sure the three screws that hold the tuning cap to the PC board are clean & tight. JohnC
John, While you're in there make sure the three screws that hold the tuning cap to the PC board are clean & tight. JohnC
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By
John Carpanini
· #66980
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sherwood s3mx mpx decoder help needed
Hi John, I just happen to have a couple of old PECs on the bench. Here are the numbers that appear on the components: 1346143 A680M1 As for the coating on the PECs it looks, feels and reacts just like
Hi John, I just happen to have a couple of old PECs on the bench. Here are the numbers that appear on the components: 1346143 A680M1 As for the coating on the PECs it looks, feels and reacts just like
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By
John Carpanini
· #67224
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off topic - CAT V cable
Hi Mike, You may want to consider the dielectric strength of Teflon as compared to other insulating materials like PVC. That consideration can then be extrapolated to the affect of different films in
Hi Mike, You may want to consider the dielectric strength of Teflon as compared to other insulating materials like PVC. That consideration can then be extrapolated to the affect of different films in
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By
John Carpanini
· #67331
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Which tuner do you use the most?
Hi all, There are some tantalum caps, 4 if memory serves, in the audio signal path, replacing those was a noticeable improvement. The rest, PS, local decoupling, etc was pretty straight forward mods.
Hi all, There are some tantalum caps, 4 if memory serves, in the audio signal path, replacing those was a noticeable improvement. The rest, PS, local decoupling, etc was pretty straight forward mods.
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By
John Carpanini
· #67433
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Sony ST A6B DIY
Hi Robert & Eli, Here's what I did with a few changes due to parts availability. Boy I miss Blackgates :-( . I also attached a pic of a completed unit, if you look close you may see some other things
Hi Robert & Eli, Here's what I did with a few changes due to parts availability. Boy I miss Blackgates :-( . I also attached a pic of a completed unit, if you look close you may see some other things
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By
John Carpanini
· #67439
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