Substituting flyback transformer for CRT monitor
nzoomed, Wed May 24 2017, 03:58AMIm needing help to figure out if its possible to replace the flyback transformer on a CRT monitor for a vintage computer im restoring.
It blew up with a bright flash and a bit of smoke, but i have no idea if i can easily swap another in its place.
Do most have the same pinouts? I see they are in all shapes and sizes, so its more if it can fit directly in the board i guess.
Its a Sampo FEA209.
TIA
Re: Substituting flyback transformer for CRT monitor
Sulaiman, Wed May 24 2017, 10:39AM
I did not see your model mentioned, maybe it is similar to one of these ?
Sulaiman, Wed May 24 2017, 10:39AM
I did not see your model mentioned, maybe it is similar to one of these ?
Re: Substituting flyback transformer for CRT monitor
nzoomed, Thu May 25 2017, 02:04AM
it probably very well is, but i dont think its as simple as swapping one over, even if it solders right in place.
nzoomed, Thu May 25 2017, 02:04AM
it probably very well is, but i dont think its as simple as swapping one over, even if it solders right in place.
Re: Substituting flyback transformer for CRT monitor
Sulaiman, Thu May 25 2017, 09:57AM
If it looks the same and the pin configuration looks the same, they probably are electrically similar.
If not, you need chassis part# to find manual/schematics to be sure
What text can you see on the flyback transformer ?
Sulaiman, Thu May 25 2017, 09:57AM
If it looks the same and the pin configuration looks the same, they probably are electrically similar.
If not, you need chassis part# to find manual/schematics to be sure
What text can you see on the flyback transformer ?
Re: Substituting flyback transformer for CRT monitor
pisoiu, Thu May 25 2017, 11:26AM
Quite some time ago I worked in a monitor service facility. I had cases with identical looking/pinout/size flyback transformers but they were incompatible.
pisoiu, Thu May 25 2017, 11:26AM
Quite some time ago I worked in a monitor service facility. I had cases with identical looking/pinout/size flyback transformers but they were incompatible.
Re: Substituting flyback transformer for CRT monitor
radiotech, Fri May 26 2017, 06:31AM
What caused it to blow up ? You could test the drive device. Monitors and TV sets with flyback issues
were serviced with the help of analyzers. This prevented just burning out new parts, while troubleshooting.
radiotech, Fri May 26 2017, 06:31AM
What caused it to blow up ? You could test the drive device. Monitors and TV sets with flyback issues
were serviced with the help of analyzers. This prevented just burning out new parts, while troubleshooting.
Re: Substituting flyback transformer for CRT monitor
Proud Mary, Fri May 26 2017, 09:38PM
The Spanish firm HR Diemen are the world's largest suppliers of replacement/equivalent FBT.
Where there is an HR Diemen equivalent, they supply a full pin-out plan, with key voltages and currents, on a pdf sheet.
HR Diemen part search is here:
Proud Mary, Fri May 26 2017, 09:38PM
The Spanish firm HR Diemen are the world's largest suppliers of replacement/equivalent FBT.
Where there is an HR Diemen equivalent, they supply a full pin-out plan, with key voltages and currents, on a pdf sheet.
HR Diemen part search is here:
Re: Substituting flyback transformer for CRT monitor
nzoomed, Sat May 27 2017, 11:17PM
Only thing written is SAMPO FEA209 on a sticker, nothing else I can see.
I will add a photo later.
Yes ive tried them, they responded and told me its not available.
Dunno why they have it listed there still. I doubt there is much market for these parts nowdays. Something tells me they scrapped all their stock, its not like every screen in the world used that part, I would expect some to have had some stock remaining.
I cant see any PDF sheet there for download, but their part number that crosses over is HR 46574
I have no idea what caused it to fail, other than just age, shortly before it blew, i could hear a bit of a squealing noise, and then a few mins later, it would make a popping sound and each time the screen would flicker, it got worse to the point that no picture hapened and i saw some arcing inside the monitor from the back, i quickly switched it off and saw that the flyback had a hole burnt on the side, so i assume the secondary had gone on it.
nzoomed, Sat May 27 2017, 11:17PM
Sulaiman wrote ...
If it looks the same and the pin configuration looks the same, they probably are electrically similar.
If not, you need chassis part# to find manual/schematics to be sure
What text can you see on the flyback transformer ?
If it looks the same and the pin configuration looks the same, they probably are electrically similar.
If not, you need chassis part# to find manual/schematics to be sure
What text can you see on the flyback transformer ?
Only thing written is SAMPO FEA209 on a sticker, nothing else I can see.
I will add a photo later.
Proud Mary wrote ...
The Spanish firm HR Diemen are the world's largest suppliers of replacement/equivalent FBT.
Where there is an HR Diemen equivalent, they supply a full pin-out plan, with key voltages and currents, on a pdf sheet.
HR Diemen part search is here:
The Spanish firm HR Diemen are the world's largest suppliers of replacement/equivalent FBT.
Where there is an HR Diemen equivalent, they supply a full pin-out plan, with key voltages and currents, on a pdf sheet.
HR Diemen part search is here:
Yes ive tried them, they responded and told me its not available.
Dunno why they have it listed there still. I doubt there is much market for these parts nowdays. Something tells me they scrapped all their stock, its not like every screen in the world used that part, I would expect some to have had some stock remaining.
I cant see any PDF sheet there for download, but their part number that crosses over is HR 46574
radiotech wrote ...
What caused it to blow up ? You could test the drive device. Monitors and TV sets with flyback issues
were serviced with the help of analyzers. This prevented just burning out new parts, while troubleshooting.
What caused it to blow up ? You could test the drive device. Monitors and TV sets with flyback issues
were serviced with the help of analyzers. This prevented just burning out new parts, while troubleshooting.
I have no idea what caused it to fail, other than just age, shortly before it blew, i could hear a bit of a squealing noise, and then a few mins later, it would make a popping sound and each time the screen would flicker, it got worse to the point that no picture hapened and i saw some arcing inside the monitor from the back, i quickly switched it off and saw that the flyback had a hole burnt on the side, so i assume the secondary had gone on it.
Re: Substituting flyback transformer for CRT monitor
johnf, Sat May 27 2017, 11:53PM
most likely one of the caps in the voltage doubler inside then a diode or two has gone to the silicon heaven. Usually the windings are completely potted in plastic and give very little trouble
johnf, Sat May 27 2017, 11:53PM
most likely one of the caps in the voltage doubler inside then a diode or two has gone to the silicon heaven. Usually the windings are completely potted in plastic and give very little trouble
Re: Substituting flyback transformer for CRT monitor
nzoomed, Fri Jun 02 2017, 12:10AM
OK, well the unit will need replacing.
Hopefully something will turn up
nzoomed, Fri Jun 02 2017, 12:10AM
OK, well the unit will need replacing.
Hopefully something will turn up
Re: Substituting flyback transformer for CRT monitor
Erlend^SE, Sat Jun 03 2017, 12:43PM
You can try contacting the flyback manufactures (there are some on aliexpress) asking what a new one made for purpose costs.
They seem to be rather willing to do a one-off for you.
Erlend^SE, Sat Jun 03 2017, 12:43PM
You can try contacting the flyback manufactures (there are some on aliexpress) asking what a new one made for purpose costs.
They seem to be rather willing to do a one-off for you.
Re: Substituting flyback transformer for CRT monitor
Conundrum, Tue Jul 11 2017, 04:45PM
Conundrum, Tue Jul 11 2017, 04:45PM
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