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KV-20FS12 Sony Trinitron CB (RGB CRT Drive) 1-677-297-11 & VB board A-1342-538-A ଅUsed and working. These were pulled out of a KV-20FS12 Trinitron that had an old/tired tube. The symptoms were that the image would repeatedly flicker on, then off, at a frequency of maybe 1-3 seconds.
The CB board is listed in the manual as being the CRT driver and RGB driver board, while the VB board is listed as being the velocity modulator board.
Please note the resistor which is best visible in picture 6. It looks to have definitely gotten warm but I don\'t know enough about CRT TV electronics to say whether this is normal or not.
The various model numbers I found are the board(s) were:
CB Board:1-677-297-1117181891120FS12 CTV4OH31SH/M#1208A-1304-183-A
VB should be compatible with these models (from what I could tell from the service me know if you have questions!Please note: I reserve the right to adjust shipping if I\'ve not estimated it properly. This should only rarely happen and mostly with buyers outside of the contiguous 48 US states. Shoot me a message with your address or state/city before purchase if you\'d like and I can confirm whether or not my shipping estimate was correct.
For SEO purposes (this is AI generated and may not be completely accurate, message me if you have any questions):
The product is a Sony Trinitron CB (RGB CRT Drive) 1-677-297-11 & VB board A-1342-538-A, designed for specific Sony television models. This unit is a genuine Sony product made in Germany, ensuring compatibility and quality. The CB board and VB board work together to tune the scan speed of electrons and provide the necessary RGB/CRT drive for optimal performance. This unit is essential for maintaining the proper functionality of your Sony television model.
