New to this: CRT repair (Phlips 107S)

[goodpsusearch]

Re: New to this: CRT repair (Phlips 107S)

Niiiiice!

So, is the tube shadow mask or aperture grille? Maximum (readable) resolution? What about refresh rates, how far can you push it?

I didn't know CHUNGHWA made CRT tubes, though. Where is it made? I do have a 19" Wise Wing LCD monitor with a CHUNGHWA TFT. Looks almost as good as my family's Dell (BenQ). I guess CHUNGHWA makes decent stuff.


Yeah, I have that problem too. Today I saw a flat screen Samsung CRT thrown out by one of the dumpsters I check every Friday. It looked pretty good and clean, but I really have no space (well I do, but my family will kill me ). Not sure if it was 17" or 19". I might go check it out again tomorrow, just out of curiosity (hopefully it will still be there). If it's a SyncMaster 997DF, I'll be very tempted to take it. Right now, I have a SyncMaster 955DF - it looks good, but image quality is only okay (too bright and thus colors are a bit washed out). The 997DF is the more expensive version of the 955DF, and has a much higher resolution and better features.

That aside, you should have taken 4 of them and done a quad-monitor setup .

I don't know how to tell the type of the tube but I can't see the 2 horizontal wires.. What does this mean?

1024x768 100HZ
1152x864 100HZ This is the best setting for me, everything is big enough and the display is very comfortable to work for hours.
1280x960 85HZ
1280x1024 85HZ absolutely readable and nice
1600x1200 75HZ readable, but anything bellow 85HZ is unacceptable for me
1920X1440 60HZ
2048X1536 (!!!) 60HZ This is the maximum resolution my graphics card could provide

[Th3_uN1Qu3]

Re: New to this: CRT repair (Phlips 107S)

So it's one of the better 17" tubes. Actually, maximum resolution and refresh rate are given not by the tube but by the board, especially the flyback and video output IC.

Physical resolution is probably somewhere close to 1280x960 so no point in pushing it higher. 1152x864 was my preferred resolution for 17" too. If you can't see horizontal wires it's a regular shadow mask not a Trinitron.

[momaka]

Re: New to this: CRT repair (Phlips 107S)

So it's one of the better 17" tubes. Actually, maximum resolution and refresh rate are given not by the tube but by the board, especially the flyback and video output IC.

Yes, but the tube is what limits the maximum readable resolution.

But I agree, this has to a good tube then. Most regular 17" monitors will become noticeably blurry at 1280x1024, not to mention that most won't even allow you to go higher than 1280x1024 because the video circuits won't allow it.
I'm quite surprised your monitor even accepts that high of a resolution. 1152x864 @ 100HZ sounds pretty good.

I don't know how to tell the type of the tube but I can't see the 2 horizontal wires.. What does this mean?

If don't see 2 black horizontal lines on a white screen, then it's a shadow mask. You can also tell just by looking at the monitor. Shadow mask will look much sharper than a aperture grille Trinitron/Diamondtron, especially if you look at vertical black lines on a white screen. With a Trinitron, the lines will appear a bit blurry, regardless of what resolution you use. With a shadow mask, they should look very sharp (unless you try to push a resolution that is too high for the tube).

I like the casing on your monitor - lots of holes for cooling in the back. Manufactured December 2004 (that's almost 2005) - very new stuff. If all is well, this monitor should be good at least until 2015 .

[goodpsusearch]

Re: New to this: CRT repair (Phlips 107S)

I like the casing on your monitor - lots of holes for cooling in the back. Manufactured December 2004 (that's almost 2005) - very new stuff. If all is well, this monitor should be good at least until 2015 .

They belong to the last generation of CRTs that were sold before TFTs took over the market. So, they tried to make those monitors take as little space as possible (you can't tell that by the picture). I really like the design, but as a result they get a bit hot after 1 hour of operation.

They also tried to drop the manufacturing cost... That means every cap in these monitors is Lelon (or worse) and most of them are 85C.. Oh well! At least I took 3 monitors so I will not run out of them anytime soon

A friend gave to me a Sony Multiscan G220, an excellent CRT monitor. Perfect building quality, all Japanese caps, but only 17". Back at those days Sony didn't compromise on quality.

I think that a properly made CRT can live more than a decade. I found 2 Eizo CRT monitors manufactured in 1997 that work perfectly until today although their casings have gone from white to yellow

[RJARRRPCGP]

Re: New to this: CRT repair (Phlips 107S)

I have a Phillips 107S made in 2000 and I got it in 2001. Still working fine.

The only Phillips 107S cons:

1. Cannot go higher than 85 Hz.

2. Has a curved screen.

[goodpsusearch]

Re: New to this: CRT repair (Phlips 107S)

I have a Phillips 107S made in 2000 and I got it in 2001. Still working fine.

The only Phillips 107S cons:

1. Cannot go higher than 85 Hz.

2. Has a curved screen.

Can you take a photo of the 2 resistors that are burnt in mine?

We need the color code!

[momaka]

Re: New to this: CRT repair (Phlips 107S)

They belong to the last generation of CRTs that were sold before TFTs took over the market. So, they tried to make those monitors take as little space as possible (you can't tell that by the picture). I really like the design, but as a result they get a bit hot after 1 hour of operation.

If your room is under 30C, it should be fine. Most monitors are specced to 40C. My SyncMaster 955DF runs mighty hot when it's close to 27C in the room, and just barely warm when it's about 18-20C.

They also tried to drop the manufacturing cost... That means every cap in these monitors is Lelon (or worse) and most of them are 85C.. Oh well! At least I took 3 monitors so I will not run out of them anytime soon

That's my thinking - stock up on CRTs now while they are still free and abundant. In 20 years, these things would be rare (and maybe even valuable? ).
And don't worry about the cheap caps - my KFC Smile is over 10 years old now, and it still works fine. Sure I've only used it like 3 times in the last 4 years, but it's caps are still aging, and this thing works fine despite that.
If anything, maybe the small caps on the board on the back of the CRT tube might die first since it's usually hottest in that area.

A friend gave to me a Sony Multiscan G220, an excellent CRT monitor. Perfect building quality, all Japanese caps, but only 17".

Aw man, I just checked the specs on that and they're pretty good - 1600x1200 resolution and USB hub on the side.
We had one like that at work - it got thrown away with the rest of the CRT monitors when we were changing to LCDs. That monitor actually spent most of its life sitting on a Windows logon screen all day and night long - what a waste. I would shut it down when I walked by it, but every now and then my boss would turn it on so that he could see if that computer was working. Probably had major burn in.

Back at those days Sony didn't compromise on quality.

The slightly older generation of Sony Trinitrons (1999 and older) were even better. I have a 17" one from 1994 that still works and I use it whenever I'm at my grandmother's place. This thing has such a strong degauss coil that when you turn it on, the lights in the whole room go very dim for second! I got it used in 2005. The case was cracked on a few spots, and there's a spot from spilled coffee on top (I got it like that). Only 800x600, though.
The other older Sony I have is a 17" Dell D1025 HTX - built in 1997. Got it free in 2007. Works like new. That thing has massive capacitors inside, all Japanese of course. I just put it in storage a few weeks ago. Now replaced with a Dell D1626HT 21" made in 1998.

I think that a properly made CRT can live more than a decade.

Absolutely right. CRT is just proven technology.