Yep more Monochrome Monitor Qs

[zeno]

First off the monitor was built by Panasonic. If its still there you could look
up FCC ID numbers & get the Panny model ##. Do that at FCC.GOV
This is how we got manuals for no name monitors. Cross the FCC ID
& get "mothers" name for the set !

When checking B&W CRT voltages the cathode is important.
If it is high you get little or no brite. If it goes too low
the pix will be to bright.

Flash on turn off
HV is up & the other voltages discharge FASTER & the cathode is hot so
still shooting electrons. Many old B&W TV's had a spot killer circuit.

Your main problem is if these sets do not see a horz sync pulse the video
will be blanked out even if the monitor is perfect.

73 Zeno
LFOD !

[TinCanAlley]

Originally Posted by zeno

First off the monitor was built by Panasonic. If its still there you could look
up FCC ID numbers & get the Panny model ##. Do that at FCC.GOV
This is how we got manuals for no name monitors. Cross the FCC ID
& get "mothers" name for the set !

When checking B&W CRT voltages the cathode is important.
If it is high you get little or no brite. If it goes too low
the pix will be to bright.

Flash on turn off
HV is up & the other voltages discharge FASTER & the cathode is hot so
still shooting electrons. Many old B&W TV's had a spot killer circuit.

Your main problem is if these sets do not see a horz sync pulse the video
will be blanked out even if the monitor is perfect.

73 Zeno
LFOD !

I'm starting to understand the blank screens, now. I can't feed it a H sync until my video card arrives. I only have a color CGA card and it will damage these monochrome monitors if I try it, so I had to buy one. The first one never arrived and the seller said they couldn't find it. So I had to order from another seller and hopefully it will be here by Tuesday. I am hoping that there is nothing wrong with either of these monitors when connected. If not, at least I'll be able to troubleshoot better when they have a signal.

I will start my search for the monitor info with the info you provided. Wish me luck.

Thanks!