Trough opto replacement
On my JD I have two trough optos that are not working. On the opto transmitting board I can see all but two lighting up with cell phone camera, and tested all IR resistors on the board, all were around 270 ohms. So to me that means those two LEDs are bad and need to be replaced, not much anything else going on on the board except a power LED.
I've found the replacement board (a-16927) but wanted to know if just the IR LED can be replaced, and if so is there a particular IR LED for that board that needs to be used. And/or if new/different transmitting IR LED is replaced does the receiving side need to be replaced at well?
Lastly it looks like this is a common issue and did notice when I was testing the resistors did get pretty hot to the touch, so is it worth to just change the LEDs or just swap the entire board with the 'new' design . I ask since a 6 opto board is ~$10 where this 7 opto board is ~$30 (seems like a big price difference) where as the IR LED is a dollar or two at most.
Thanks in advance