CurtPalme.com Home Theater Forum

[Curt Palme]

I think I need to market myself some more. Got a call from a company in the interior of BC that has three CNC metal machines, pressed, and such. All three have monochrome CRT monitors in them that died. I told the customer to send them down, which they did.

These are 20+ year old machines, and the manufacturer now offers 'upgrades' to LCD monitors.. but at something insane like $2K each. I offered to look at the monitors, no charge if I couldn't repair them. 2 out of 2 that I've looked at are now running. ONe was simple, bad solder joints. THe other one had multiple parts failures, a bit strange since the unit had three distinct problems, all which caused no picture. The first was a power supply cap, that caused the set to pulse and chirp. THe second was a shorted video output transistor. The third was a bad focus pot on the CRT neck.

Anyways, just in case someone here still has a CRT monitor in a specialty application, I can fix that!

[Curt Palme]

I think I need to market myself some more. Got a call from a company in the interior of BC that has three CNC metal machines, pressed, and such. All three have monochrome CRT monitors in them that died. I told the customer to send them down, which they did.

These are 20+ year old machines, and the manufacturer now offers 'upgrades' to LCD monitors.. but at something insane like $2K each. I offered to look at the monitors, no charge if I couldn't repair them. 2 out of 2 that I've looked at are now running. ONe was simple, bad solder joints. THe other one had multiple parts failures, a bit strange since the unit had three distinct problems, all which caused no picture. The first was a power supply cap, that caused the set to pulse and chirp. THe second was a shorted video output transistor. The third was a bad focus pot on the CRT neck.

Anyways, just in case someone here still has a CRT monitor in a specialty application, I can fix that!

[dvh99]

curt if you come across philips brilliance 201p i`m interested, its the monitor i have and it gives a very nice picture but there are so many hours on it that i have to crank contrast to get decent light output.
the monitor must have good light output at normal contrast setting.

[ecrabb]

Curt, you should throw some model numbers into this post, and even into a page on your site... There were a lot of high-end Barco and Sony monitors in prepress setups... Some of those were really, really expensive displays, and the LCD's to replace them now are also horrendously expensive. The economy being what it is, there might be a lot of smaller print shops that would be eager to spend $500 on shipping and repairs to keep their old display going instead of spending $4000 on a new display.

Just an idea.

SC

[Nashou66]

Steve, like the Merry Christmas touch to your avatar!

Athanasios

[Curt Palme]

No, these are very old technology. Try 480i resolution, but on a VGA connector. THe last one is even worse, it uses monochrome TTL video output. I gotta search my junk boxes to see if I have any booster so I can get a 5 volt video signal output....

THis thing is so archaic that it uses the sync pulse of the video signal to generate the HV. No video input, no HV, no filament voltage, etc. Then again, it's one way of saving CRT tube life.

I was so proud of myself too, I had a BNC to 9 pin subD connector adapter, and got the sync of my scaler to power the set up I still had no video though. Then I realized that the video output ran right into a TTL chip. 0.7 volt input will not trigger the TTL chip to output, so thus my quest of a 5 volt p-p video source...

[Curt Palme]

No, these are very old technology. Try 480i resolution, but on a VGA connector. THe last one is even worse, it uses monochrome TTL video output. I gotta search my junk boxes to see if I have any booster so I can get a 5 volt video signal output....

THis thing is so archaic that it uses the sync pulse of the video signal to generate the HV. No video input, no HV, no filament voltage, etc. Then again, it's one way of saving CRT tube life.

I was so proud of myself too, I had a BNC to 9 pin subD connector adapter, and got the sync of my scaler to power the set up I still had no video though. Then I realized that the video output ran right into a TTL chip. 0.7 volt input will not trigger the TTL chip to output, so thus my quest of a 5 volt p-p video source...

[stefuel]

When analog gets tough the tough get.....................................going backwards
What's next, Atari game consoles