guywithquestion said: I ordered a new convergence board for my hcl4715 and installed it as per all the information posted. It fixed the convergence problem, except the absence of red on the screen. Does this sound like a loose connection on the new board or something else? Red was working fine before the replacement. Thank you for any help.
Following Larry's advice earlier in the thread, I'd suspect a loose cable. With power off, double-check each cable (i.e., gently wiggle each connector) that you touched when you replaced the board. Make sure there are no extra cables not plugged into anything. Also check the other end of the cables, since they may have been slightly loose when you got started and your board replacement may have made them more loose. Be sure to check the cables going to the CRTs.
If this doesn't work, another possibility is that you bent a pin when plugging in a connector, for example the one that brings in low voltage red from the main board.
Hope this helps.