CurtPalme.com Home Theater Forum

Riewekooche · Joined: 23 Feb 2007 Posts: 19

Hi,

my 1031 fails during power-up.
After 2 or 3 seconds i hear a "click-clack" and it shuts down and a red led lights.

First i renewed the caps on the GA-Board -> nc (no change)
Then i changed the GA-board with a running one from another 1031 -> nc

(Installing my GA-board in the other 1031 works fine - so the GA-board doesn't seems to be the problem.)

Doing the same with the GC-board -> nc

What should i do?
The other 1031 is in a bad condition and seems to use tubes from a 1040.
I dont really want to change the tubes. (a bit fear about it).

Any ideas which component probable is corrupt. (of course all can be, but what are your experiences.

Regards
Thomas

CasetheCorvetteman · Joined: 09 Nov 2008 Posts: 6326 Location: Australia

Yep, got a fair idea, youve got a short to ground somewhere in there, unplug the HV board and see if itll run then...

Riewekooche · Joined: 23 Feb 2007 Posts: 19

If i disconnect EA-11 connector from GB-board (this is the power supply fort thhe EA-board and the HV-section) it squeaks in high frequency for 2 seconds (new) but shuts down like before.

I suspect the transistors 2SC116...
How to check them?

**Curt Palme** · Posted: Sun Aug 14, 2011 11:41 pm Post subject:

Usually the problem is the Ga board, those custom small black or brown Sony chips that are no longer available.

No offense, but if you don't know how to check transistors, you probably won't be able to figure out how to fix this set. You need some pretty experienced ability to work on this set.

CasetheCorvetteman · Joined: 09 Nov 2008 Posts: 6326 Location: Australia

Watch a youtube video of how to check transistors, there are a few good ones on there. They can explain it easier by showing you in video.

Riewekooche · Joined: 23 Feb 2007 Posts: 19

CasetheCorvetteman · Joined: 09 Nov 2008 Posts: 6326 Location: Australia

At the end of the day, what is this forum actually for if it is not to help people learn to repair their CRT projectors and set them up to perform their best?

I notice whenever there is a question about a CRT projector that the regulars on here dont think is worth turning on, they dont bother to offer their huge wealth of knowlege in order to get the machine up and running again.

Yet i find it strangely amusing that while people dont help with these lessor projectors, threads like this one: https://www.curtpalme.com/forum_archived/viewtopic.php@t=27736.html not only get made, but get replies?? But you ask a serious question about a Sony 10 series projector and no one wants to know.

Why? Im confused. I thought this was a CRT discussion forum!!! Smile

macgyver655 · Joined: 22 Aug 2007 Posts: 8508

**Curt Palme** · Posted: Mon Aug 15, 2011 2:20 pm Post subject:

Case, it's a valid question, and I'll answer in detail.

First off, when it comes to the sets that literally have zero value, and I'm giving parts away, I don't care how deep someone goes to discuss the repairs of them, in fact I've been pretty damn liberal with people posting partial schematics here about newer sets, but in that case I won't enter the discussions. With business overall being down, I've got to work harder than ever to make ends meet, and I'm not going to sit here for hours dissecting a circuit, giving away free info when I could be working on something that makes me money. That's the (sad) cold hard facts. By all means, jump in and assist though.

Second, the whole 10XX series of sets is really hard to work on, mainly because there's no error codes or LEDs in the set. A 10XX that shuts down could be anywhere in the set. My guess was the power supply itself, as on occasion a bad GA board in one set will work in another, but it is indeed also possible that the fault is elsewhere. That's where the experienced troubleshooting skills come in.

When the poster asks how to test a transistor, it's an indication to me that the poster doesn't know the basics of electronics, as testing a transistor is about as basic as it gets. A set that is hard to work on along with an inexperienced tech makes for a bad combination.

The best advice I can offer is to swap parts and boards between the two sets. At this point, I've had every board literally in the 1031 cause shutdowns. THe hardest one to find was a shorted tube that loaded down the HV, which shut the set down.

Now, to the OP, I do have two big boxes of 10XX parts that I'm giving away for the price of shipping. Some of the boards work, some do not. No charge save for the cost of shipping. If you do figure out which board/part it is, chances I have it. I would swap boards between the two sets, swapping boards is pretty easy to do, but I'm afraid I don't have any advice on which one it could be.

macgyver655 · Joined: 22 Aug 2007 Posts: 8508

And I dont mind spending the time to help out on more in depth troubleshooting but the person has to at least know how to use a DMM and soldering iron.

CasetheCorvetteman · Joined: 09 Nov 2008 Posts: 6326 Location: Australia

Thankyou for taking the time to answer that question Curt, cause it really has me wondering some times what the hell we are here for if it is not to help each other. Im here to learn and to help others where and when i can.

As you very clearly stated and as i allready knew, you believe the 10XX Sonys are worth nothing, hence its no loss to you if people help people out with it. If anything, itll clear up space in your workshop when you move parts out the door.

For some people, me included, these projectors are not so worthless. The Sony 1001 i have is somewhat critical to my home when i go to play certain video games that use an old style light gun. These DO NOT work on a digital of any sort, making a CRT a must. Why waste a higher end set on a 240p signal when you can use a cheap and extremely reliable 10XX Sony for this job? That is my reason for it, which is why i went to the trouble i did to keep mine going. These sets are VERY valuable to me at least.

What will i do when its no longer working? No idea, but i know without a suitable CRT i wont be able to ever play at least 3 games on original hardware again. Something that is extremely important to me.

Im certainly not expecting you or anyone to sit here for hours at a time giving free help, ive been there and done all that myself on a Corvette forum, and i have discussed this very issue with Macgyver in the past. But the point im making is hardly anyone even offers anything at all, unless its a top end rig like the ones youre still trying to make money from. Its not just this instance, and not even so much this instance, but it is something i seem to be seeing ( or not seeing ) more and more.

I know ive posted requests for abit of help over the time ive been here with my 9PG, and im lucky to even get a reply, and i KNOW there is people here that know the answers, and not a single one of them is going to lose a cent by telling me. This set is also very valuable to me.

The way i see it from my personal perspective, if no one helps me, i have no way to find out what to do so i know which parts to buy. So nothing gets done. Perfect example is a thread i made a little while ago asking what i needed to to in order to feed my 1001 an RGB-S signal. No reason this couldnt be done, cause the on screen display outputs in RGB as far as i know, and the set is near identical to the 1044 which does have the RGB input. Surely someone here knows where i should start looking.

And then its not like as if there is alot of different places to buy the parts or take them to be fixed either.

With your service being so good and fast, as well as being quite reasonably priced, who would go elsewhere?

I further believe that if so many people didnt tell people these good projectors are "worthless" when i have just proven that they are not, i think there certainly would be more of a market for them. I have seen on this forum numerous times where someone has asked about a particular projector, and people have told them its a waste of time, even when many of them were in good condition, right through to comments suggesting they would be plain stupid to bother. Why are they stupid to bother? I dont know.

Anyway, i am not setting out to offend anyone here and sincerly hope i have not done so, im just trying to figure out why all the secrecy when no one is about to gain from it.

**Curt Palme** · Posted: Tue Aug 16, 2011 12:53 pm Post subject:

The bigger problem is when an inexperienced tech works on something, then causes more problems by 'repairing' the wrong thing, then it's impossible to figure out what the problem is. Ask Mac, 'accidents' happen fairly often, even with experienced techs. I had it happen the other day with a Barco 708. I was checking stuff on a chassis, and all of a sudden, it acted differently. Within a few minutes, I'd figured out that one of the surge protection resistors opened in the power supply. That happens on a regular basis, and it didn't slow me down at all, but to a rookie, he won't catch that.

A better example is me and my Toyota Paseo that was getting 15 MPG instead of 35-40. I took it to Toyota, they couldn't figure it out, ditto for an independent tech. Since I'd done the original engine swap, I figured I'd done something wrong. I ended up buying a whole second Paseo, and started swapping parts over to find the problem. While I'm a hack mechanic at best, I can use my troubleshooting thought process that I use to fix electronics and apply it to cars or almost anything else that doesn't work.

With the OP, he has a second set that he should start swapping parts with. Once he finds the bad part or module, chances are I've got one that he can have for free.

As for other CRT problems, I'll almost always assist in troubleshooting down to the nearest module. If it's a source/projector issue, I usually won't chime in unless I'm experienced with using that combination. Since I mainly do repairs with an old scaler on my bench, I won't chime in with Lumagen or Moome threads, since I don't have the experience. DItto with 3D. In fact, a bunch of 3D threads here are probably started by people that I've told to post here since I don't play with 3D at all.

macgyver655 · Joined: 22 Aug 2007 Posts: 8508

**Curt Palme** · Posted: Tue Aug 16, 2011 2:00 pm Post subject:

Mac, do you have a set of probes that Huntron uses? Retractible super sharp tips. I've destroyed the ones I bought 5 years ago, I need to order another set. BEst probes for small stuff on a DMM, ever. $25 when I bought them last...

macgyver655 · Joined: 22 Aug 2007 Posts: 8508

Hmmm, I'll have to look into them......

http://www.google.com/products/catalog?hl=en&cp=6&gs_id=m&xhr=t&q=huntron&qe=aHVudHJv&qesig=YObl1a4wHTWWEBlPq2ZWmA&pkc=AFgZ2tkgIQPj1RnwJCGDWgv6_G5snJ401gWGhUVcdardZYwG0KajQoucGgBBBVaAh40w-aoWOFTYyvGenKrBFHZPRFeKfSsGOQ&biw=1280&bih=696&gs_upl=&bav=on.2,or.r_gc.r_pw.&um=1&ie=UTF-8&tbm=shop&cid=5628949000883684092&sa=X&ei=Hn1KTpPAL8LZgAfV3LFz&sqi=2&ved=0CI0BEPICMBI

**Curt Palme** · Posted: Tue Aug 16, 2011 2:35 pm Post subject:

Check into them? No, you WANT them! Smile

Trust me on this, best $25 you ever spent!

CasetheCorvetteman · Joined: 09 Nov 2008 Posts: 6326 Location: Australia

I have no arguement for anything you have put up Curt, and i do in most instances agree with you, but what about the times there is zero replies at all? Ive had this a few times, and its not til i actually email you dirrectly with a link to the thread that i get a reply!!

When ever i do get a reply, it is almost always from you, Macgyver, or Gjaky!!

**Curt Palme** · Posted: Wed Aug 17, 2011 1:55 pm Post subject:

There's a whole pile of problems with CRTs that I've never seen before, so if it's a technical question and I don't answer, as with the Sony 12XX problem right now with a line down the middle of the screen, it's because I haven't seen it before.

I usually stay away from setup questions, and since my eyes can't track 3D at all, I don't even bother with those threads. I do miss the occasional thread as well.