mikeh
02-01-2008, 09:17 AM
First I want to thank everone here, I have learned so much since I have been lurking arount the forums. I am interested to know if anyone here has restored a 628.
The 628 has been by far the most time consuming and most difficult resrtoration I have worked on. The set suffered a major failure early in its life with a bad power transformer and open voltage divider resistors with shorted eletrolytic caps. The set had most of the Emerson branded tubes and an Emerson crt with a period date code. The set is close to becoming operational only have a horizontal sync issue now. My real concern right now is the power transformer gets real hot after only 20 minutes of operation. I had the transformer rewound and it ran cool with no load on it. Was this set know for problems in its day. I am not real experienced in these early tv's, but this has the hottest running transformer of any tv that I have restored. The low voltage powersupply voltages are all within 10 volts of what the
SAMS shows.
Many thanks for any informaion on this set.
Mike
The 628 has been by far the most time consuming and most difficult resrtoration I have worked on. The set suffered a major failure early in its life with a bad power transformer and open voltage divider resistors with shorted eletrolytic caps. The set had most of the Emerson branded tubes and an Emerson crt with a period date code. The set is close to becoming operational only have a horizontal sync issue now. My real concern right now is the power transformer gets real hot after only 20 minutes of operation. I had the transformer rewound and it ran cool with no load on it. Was this set know for problems in its day. I am not real experienced in these early tv's, but this has the hottest running transformer of any tv that I have restored. The low voltage powersupply voltages are all within 10 volts of what the
SAMS shows.
Many thanks for any informaion on this set.
Mike