Ibm 7097-5c3

[luke9511]

hello everyone, I have this ibm crt monitor sitting here, it powers on but no picture, I have searched google and have come up empty so I am hoping someone here may have seen this monitor before and can give me some tips on troubleshooting it.

Thanks

[FIXITNOW]

Re: Ibm 7097-5c3

check to see if Q602, Q607 are bad shorted , and R182 open circuit,

if so replace and also C182 = 10 uF/250V
else they will blow again

Q602 (2sC5442A) and Q607 (2sJ449) R182 (10 ohm 2 watt)

[luke9511]

Re: Ibm 7097-5c3

check to see if Q602, Q607 are bad shorted , and R182 open circuit,

if so replace and also C182 = 10 uF/250V
else they will blow again

Q602 (2sC5442A) and Q607 (2sJ449) R182 (10 ohm 2 watt)

are these on the neck board or the main board? and thanks alot for the info!

[FIXITNOW]

Re: Ibm 7097-5c3

main board

[luke9511]

Re: Ibm 7097-5c3

well I took it apart to have a look and just found out that since it was in storage and its just like the other one, the neck of the tube broke, what size is the tube I might be able to replace it

[PlainBill]

Re: Ibm 7097-5c3

well I took it apart to have a look and just found out that since it was in storage and its just like the other one, the neck of the tube broke, what size is the tube I might be able to replace it

You're kidding, right? It's been a while since I've worked on a CRT monitor, but the part number of the CRT is usually on the CRT.

Also, while I'm all for keeping stuff out of the landfill, get real!! You can't buy a new CRT, so the replacement would have to come from a dead monitor, most of which have been sent to a recycler.

Last, I just checked the local Craigslist. Somebody in Scottsdale is selling a working 19" Dell CRT monitor for $10. Of course, shipping would be a killer. But someone in Brentwood, TN has an IBM P275 CRT (21" Trinitron) monitor for $30!!!

PlainBill

[jetadm123]

Re: Ibm 7097-5c3

If you look under "free" in the "For Sale" section of Craigslist, you'll probably find someone trying to get rid of their old CRT monitor. All you have to do is show up to pick it up. Hint: I'm sure there will a lot of people trying to dump their old CRT monitors after Christmas.

[luke9511]

Re: Ibm 7097-5c3

You're kidding, right? It's been a while since I've worked on a CRT monitor, but the part number of the CRT is usually on the CRT.

Also, while I'm all for keeping stuff out of the landfill, get real!! You can't buy a new CRT, so the replacement would have to come from a dead monitor, most of which have been sent to a recycler.

Last, I just checked the local Craigslist. Somebody in Scottsdale is selling a working 19" Dell CRT monitor for $10. Of course, shipping would be a killer. But someone in Brentwood, TN has an IBM P275 CRT (21" Trinitron) monitor for $30!!!

PlainBill

I have a BUNCH of working and semi working crt's that I want to try and fix and give away, besides it helps me learn more about electronics and soldering etc

[PlainBill]

Re: Ibm 7097-5c3

I have a BUNCH of working and semi working crt's that I want to try and fix and give away, besides it helps me learn more about electronics and soldering etc

You are to be congratulated for your public service.

Excuse my saying this, but learning about electronics by repairing CRT monitors is about as useful as learning automotive repair by rebuilding Yugos.

PlainBill

[smason]

Re: Ibm 7097-5c3

Also, if I remember the late 70's correctly, after replacing a CRT tube you have the lovely task of adjusting things like convergence and purity, which could drive you to drink.

[PlainBill]

Re: Ibm 7097-5c3

Also, if I remember the late 70's correctly, after replacing a CRT tube you have the lovely task of adjusting things like convergence and purity, which could drive you to drink.

Well, that monitor was probably from the mid to late 1990's, so the adjustment might not be so bad. You would probably have to adjust focus, (G2??, G3??), cutoff and gain on all guns.

The fact is that IBM is a 15.5" monitor. IF he can find an exact match, swapping tubes would probably take an hour, maybe more; some of the IBM monitors were real bears to open. A Dell 15" LCD is slightly smaller, and would take about the same amount of time to repair. Put the two of them side by side and guess which one would be grabbed first. Add a 17" no-name LCD and the other two would be ignored.

Again, I really admire what he is doing. I just feel that repairing a 17" CRT monitor with a broken tube is pretty much a waste of time.

PlainBill

[luke9511]

Re: Ibm 7097-5c3

Also, if I remember the late 70's correctly, after replacing a CRT tube you have the lovely task of adjusting things like convergence and purity, which could drive you to drink.

I also work on arcade machines from the 80's and have done a tube swap before using a tv tube to replace a pacman monitor tube with bad burn in

Well, that monitor was probably from the mid to late 1990's, so the adjustment might not be so bad. You would probably have to adjust focus, (G2??, G3??), cutoff and gain on all guns.

The fact is that IBM is a 15.5" monitor. IF he can find an exact match, swapping tubes would probably take an hour, maybe more; some of the IBM monitors were real bears to open. A Dell 15" LCD is slightly smaller, and would take about the same amount of time to repair. Put the two of them side by side and guess which one would be grabbed first. Add a 17" no-name LCD and the other two would be ignored.

Again, I really admire what he is doing. I just feel that repairing a 17" CRT monitor with a broken tube is pretty much a waste of time.

PlainBill

as of right now with me being out of work I have alot of time on my hands so I am learning a bunch of new things, this and studying for my A+ and CCNA certs , I also plan to recap a couple of motherboards and a tv soon

[smason]

Re: Ibm 7097-5c3

Again, I really admire what he is doing. I just feel that repairing a 17" CRT monitor with a broken tube is pretty much a waste of time.

PlainBill

Agreed on both points. Doing something to learn, or as a hobby is never completely a waste of time, though I wouldn't even bother to crack open a CRT monitor, even if I *knew* it was only a fuse or a solder joint.

Some of my friends wonder why I spend 1 hour and $7.00 to fix an LCD monitor when you can buy a new one for $150.00
One man's hobby is another man's waste of time I s'pose.

[retiredcaps]

Re: Ibm 7097-5c3

Some of my friends wonder why I spend 1 hour and $7.00 to fix an LCD monitor when you can buy a new one for $150.00

I like to think of money in the following manner. In order to have $150 CDN, you need to make $300 CDN before the goverment takes approximately 50% of it way in the form of some tax(es).

Assuming minimum wage is $10/hour, is it worth working 30 hours for a new monitor?

PS. In Canada, the enviromental fee/tax for buying a new computer LCD monitor is $12 alone. Spending $7 makes a lot more sense to me.

[PlainBill]

Re: Ibm 7097-5c3

And I use a slightly different rationale.

Taking something that has been written off as 'unrepairable' and getting it working is a real ego boost. (And failing to repair one is a healthy reminder that I may not be as smart as I believe).

Like many people here, my time is essentially free. Would one hour spent trying to repair a monitor be better spent playing solitaire? I don't think so.

While we aren't starving, the amount of discretionary income is quite limited. (I recently spent my available energy for a week cutting down a dead tree to save the $200 a professional wanted). One hour spent repairing a monitor I can sell for $70 is a nice bit of 'found' money, even if Uncle Sam wants 25% of it.

Oh, yeah, there is the 'save the environment' aspect, too.

PlainBill

[FIXITNOW]

Re: Ibm 7097-5c3

i am with you PlainBill i fix what ever comes my way if i can make some money from it
use to do a lot or crt televisions tell everyone wanted a flat one now do lcd monitors pc's and audio stuff plus car audio plus decodes keeps the gray cells alive and earns me some cash
most stuff i get comes via freecycle or local collection 99p items on ebay
all the best
vince

[luke9511]

Re: Ibm 7097-5c3

i am with you PlainBill i fix what ever comes my way if i can make some money from it
use to do a lot or crt televisions tell everyone wanted a flat one now do lcd monitors pc's and audio stuff plus car audio plus decodes keeps the gray cells alive and earns me some cash
most stuff i get comes via freecycle or local collection 99p items on ebay
all the best
vince

exactly! which is why I plan to try and get a couple of free non working lcd tv's to fix and sell, a couple are like 50inch! so one of those im keeping lol