View Single Post
Old 16th Feb 2018, 4:15 pm   #21
Keith's Avatar
Join Date: Jan 2003
Location: Tewkesbury, Gloucestershire, UK.
Posts: 513
Default Re: Bush TV22 restoration

Well, I have some progress to report. I managed to successfully rewind both blocking oscillator and frame output transformers using a hand drill clamped in a vice. I even got the oscillator transformer back in the right way round first time (pure luck)! So I now have my first raster. An AM signal generator at 41.5MHz and 45MHz gives me tone and vision bars respectively so the RF deck seems to be working. Time to have a go at producing some video. I was intending first to try producing composite sync using an Arduino (my programming skills have so far only managed to get an LED to flash!). I also read that it might be possible to use a the video card in a PC configured using the "modeline" tool to produce 405 lines. Any advice would be appreciated.
Attached Thumbnails
Click image for larger version

Name:	Hand drill rewinding.JPG
Views:	179
Size:	27.3 KB
ID:	157519   Click image for larger version

Name:	Finished oscillator winding.JPG
Views:	174
Size:	37.5 KB
ID:	157520   Click image for larger version

Name:	Rewound oscillator transformer.jpg
Views:	174
Size:	121.5 KB
ID:	157521   Click image for larger version

Name:	Output tfxr rewinding.JPG
Views:	158
Size:	21.0 KB
ID:	157522   Click image for larger version

Name:	Finished output transformer.JPG
Views:	164
Size:	25.4 KB
ID:	157523  

Keith Yates - G3XGW
VMARS & BVWS member
Keith is offline