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Replacing Selenium Rectifiers in TON Trans-Oceanics

Replacing Selenium Rectifiers in TON Trans-Oceanics All the miniature tube Trans-Oceanics, from the G500 to the B600, were equipped with selenium rectifiers instead of the traditional tube rectifier. Selenium rectifiers are notorious for failing gradually over time. Their forward voltage drop increases to

Selenium Rectifier Hallicrafters/TON T.O.

How do you test a selenium rectifier, like those in Hallicrafters or TON T.O.,s Thanks, Phil You drop it in the trash bucket and if it makes a thud when it hits bottom, it is bad.

TON Selenium Rectifier Replacement Antique Radio

TON Selenium Rectifier Replacement. OK, I'm a little confused about this as I've seen conflicting instructions about placement of the 1n4007 diode and the 75ohm 5 watt resistor. A Connect non-striped end of diode to where the negative side of the old SR was (in the case of the

TON Selenium Rectifier replacement Antique Radio

Posts: 2885. Location: Advance, NC USA. I replaced the Selenium Rectifier in my TON A600 chassis with two series 1N4007's without a need to change the existing 130 ohm series resistor. 1N4007's are cheap and I opted for two in series just in case one of them shorts out that the other one will continue to protect the circuit.<P>Carl<BR><P

TON Trans-Oceanic A600, replaced selenium rectifier

TON Trans-Oceanic A600 with no sound output at all. No static, no humming, not a peep. First I replaced the obviously defective .047uf bumblebee cap at the entrance of the power cord with a Sprague .047uf rated at 600vdc. I successfully replaced the selenium rectifier with a silicon diode and

Refurbishment of a TON G500 Transoceanic Gerry O’Hara

2020-11-1  The selenium rectifier was replaced with a silicon rectifier (1N4007) and its series resistor (a 130 Ohms, 3W part) replaced with a new 220 Ohm 5W part to bring the HT voltage back to spec. (silicon rectifiers are more efficient and exhibit lower voltage drop). The photo above shows the under-chassis before the

TON H-500 Transoceanic Ohio University

2020-6-22  The rectifier voltage drop was 40 volts. The conclusion was that this set had a totally worn out selenium rectifier, a typical problem. Rectifier replacement Disconnected the wires from the selenium rectifier but left it in place. Mounted a small terminal strip on the end of the rectifier

TON Trans-Oceanic Resources, collecting, repair, and

2021-9-4  TON 500 & 600 Series Trans-Oceanic Restoration Guide; Step-by-Step Tutorial on Recovering a TON Trans-Oceanic Radio; Re-Stuffing the Capacitor Can in 600 and 500 Series Trans-Oceanics; Replacing the Selenium Rectifier in 500 and 600 Series Trans-Oceanics; How to Align Your Tube TON-Transoceanic

Restoration of Your TON Trans-Oceanic

2009-10-28  A similar effect is observed with selenium rectified radios, if the filters are bad the rectifier is sure to be bad as well. If you want to run the radio via the AC line replacing the electrolytic filter capacitors is the first step to restoring the radio to reliable high performance operation.

Repair of TON H-723Z AM/FM Table Top Gerry O'Hara

2015-5-22  similar sets produced by TON in the early-1950's. This particular set was introduced in 1951 and sported AM (Broadcast Band) and VHF (FM) reception, using all-miniature tubes. The H-723Z is a 7 tube plus selenium rectifier superhet designed for 110V AC/DC power. An RF stage (12BA6) is used when receiving VHF signals, with AM Broadcast

Replacing Selenium Rectifier(TON Antique Radio

I want to replace the selenium Rectifier in a model H725 TON radio. It is rated at .087A according to the parts list. I thought about using a 1N4007 diode bridge, but do not know if this will work, and just beyond the rectifier is a 22 ohm,1watt wire wound.

Selenium Rectifier Replacement TON Transoceanic

Offered here is a Selenium Rectifier Replacement using a modern silicon diode with a 43 ohm series resistor to approximate a selenium rectifier electrically. Selenium rectifiers have a tendency to slowly fade away with age, and are also known for their tendency to burn and produce toxic gas with a terrible odor when they fail.

Radios TON Y723 1956

Radios TON Y723, 1956 AM-FM. Tubes: 12BA6, 12AT7, 12BA6, 12BA6, 12AU6, 19T8, 35C5 + Selenium rectifier.

1959-1962 TON "Trans-Oceanic" Model B600 shortwave

2021-9-13  Selenium Rectifier "M1" and "M2" Can I substitute a Type 583-BR34 (3A 400v) silicon bridge rectifier for the selenium rectifier ("M1" and "M2" in the schematic)? According to the schematic, M2 is only used when the 220v adapter is fitted. I am not sure if M1 and M2 are part of a single selenium rectifier

Selenium Rectifier Radio Museum

2005-3-30  28.Feb.2005 Paul Schmidt TON: (Ch=5G40); Transoceanic G500 RADIOS IM RADIO-MUSEUM On the topic of retaining a selenium rectifier, it probably is a really good idea to replace it with silicon diodes. I am not a chemist but I understand that when a selenium rectifier fails it can release toxic gas, and retaining a selenium rectifier

Refurbishment of a TON G500 Transoceanic Gerry O’Hara

2020-11-1  The selenium rectifier was replaced with a silicon rectifier (1N4007) and its series resistor (a 130 Ohms, 3W part) replaced with a new 220 Ohm 5W part to bring the HT voltage back to spec. (silicon rectifiers are more efficient and exhibit lower voltage drop). The photo above shows the under-chassis before the

TON H-500 Transoceanic Ohio University

2020-6-22  The rectifier voltage drop was 40 volts. The conclusion was that this set had a totally worn out selenium rectifier, a typical problem. Rectifier replacement Disconnected the wires from the selenium rectifier but left it in place. Mounted a small terminal strip on the end of the rectifier

1950 TON Trans-Oceanic Model G-500 Short-Wave Radio

2013-12-8  The replacement of the rectifier tube by a Selenium rectifier too turned out to cause headaches today, since they tend to deteriorate and have to be replaced (by Si diodes). The prominent exterior difference between the 8G005Y and the G500 is the golden TON emblem "Royalty of

Restoration of Your TON Trans-Oceanic

2009-10-28  A similar effect is observed with selenium rectified radios, if the filters are bad the rectifier is sure to be bad as well. If you want to run the radio via the AC line replacing the electrolytic filter capacitors is the first step to restoring the radio to reliable high performance operation.

[email protected] TON Trans-Oceanic

2019-11-15  Replacing the Selenium Rectifier in 600 Series Trans-Oceanics. Also applies to the 500 Series Trans-Oceanics Aligning the H500 Trans-Oceanic. Also useful for other tube Trans-Oceanics. Repairing Slipping Dial Cords on TON Royal 1000 and 1000D Trans-Oceanics. Chassis Removal, Models 1000, 1000D, and 3000 Trans-Oceanics

Replacing Selenium Rectifier(TON Antique Radio

I want to replace the selenium Rectifier in a model H725 TON radio. It is rated at .087A according to the parts list. I thought about using a 1N4007 diode bridge, but do not know if this will work, and just beyond the rectifier is a 22 ohm,1watt wire wound.

1959-1962 TON "Trans-Oceanic" Model B600 shortwave

2021-9-13  Selenium Rectifier "M1" and "M2" Can I substitute a Type 583-BR34 (3A 400v) silicon bridge rectifier for the selenium rectifier ("M1" and "M2" in the schematic)? According to the schematic, M2 is only used when the 220v adapter is fitted. I am not sure if M1 and M2 are part of a single selenium rectifier

Radios TON Y723 1956

Radios TON Y723, 1956 AM-FM. Tubes: 12BA6, 12AT7, 12BA6, 12BA6, 12AU6, 19T8, 35C5 + Selenium rectifier.

Selenium Rectifier Radio Museum

2005-3-30  28.Feb.2005 Paul Schmidt TON: (Ch=5G40); Transoceanic G500 RADIOS IM RADIO-MUSEUM On the topic of retaining a selenium rectifier, it probably is a really good idea to replace it with silicon diodes. I am not a chemist but I understand that when a selenium rectifier fails it can release toxic gas, and retaining a selenium rectifier

Refurbishment of a TON G500 Transoceanic Gerry O’Hara

2020-11-1  The selenium rectifier was replaced with a silicon rectifier (1N4007) and its series resistor (a 130 Ohms, 3W part) replaced with a new 220 Ohm 5W part to bring the HT voltage back to spec. (silicon rectifiers are more efficient and exhibit lower voltage drop). The photo above shows the under-chassis before the

TON H-500 Transoceanic Ohio University

2020-6-22  The rectifier voltage drop was 40 volts. The conclusion was that this set had a totally worn out selenium rectifier, a typical problem. Rectifier replacement Disconnected the wires from the selenium rectifier but left it in place. Mounted a small terminal strip on the end of the rectifier

Radios TON G-500 1950

Radios TON Trans-Oceanic G-500, 1950 This is the first Trans-Oceanic to use five miniature tubes and a selenium rectifier. Chassis 5G40. The original price was $99.95.

Restoration of Your TON Trans-Oceanic

2009-10-28  A similar effect is observed with selenium rectified radios, if the filters are bad the rectifier is sure to be bad as well. If you want to run the radio via the AC line replacing the electrolytic filter capacitors is the first step to restoring the radio to reliable high performance operation.

[email protected] TON Trans-Oceanic

2019-11-15  Replacing the Selenium Rectifier in 600 Series Trans-Oceanics. Also applies to the 500 Series Trans-Oceanics Aligning the H500 Trans-Oceanic. Also useful for other tube Trans-Oceanics. Repairing Slipping Dial Cords on TON Royal 1000 and 1000D Trans-Oceanics. Chassis Removal, Models 1000, 1000D, and 3000 Trans-Oceanics

TON H845 (1964) FOR SALE! item 1550122

The chassis was restored with replacement of wax capacitors, checked tubes and resistors, replacement of the selenium rectifier and alignment peaked. The wooden cabinet has been refinished with gloss lacquer. 16"W x 10"H x 9"D. $195.00. (1550122) This 1964 model of AM-FM TON was known for