DAVES89 Posted April 4, 2013 Share Posted April 4, 2013 About two years ago I picked up a CRT from Gibson's for about $10.00 Shortly after I installed it, the CRT screen started getting a little"squigly" along the bottom 1/3 of the screen and then would snap straight and be good and then go back to squigly. About a week ago it went black for about 5-10 seconds then came back on perfect, then back to squigly. This morning it happened again. I guess the end is near, and I will be swapping it out when it completely fails, but the point I want to make is while this unit has been failing for some time, I am surprised at how long it took to die. Link to comment Share on other sites More sharing options...
Machiner 55 Posted April 4, 2013 Share Posted April 4, 2013 Dave,This guy is supposed to be good for repairing the CRT's.1988 1989 88 89 Buick CRT Touch Screen Riviera Reatta | eBayJohn F. Link to comment Share on other sites More sharing options...
DAVES89 Posted April 4, 2013 Author Share Posted April 4, 2013 Hey John, Not interested in repairing. I'll just send it on to kdirk next time he needs something and he can deal with it. I was just commenting on how well built they are and even when they are dying they still work well. Link to comment Share on other sites More sharing options...
padgett Posted April 4, 2013 Share Posted April 4, 2013 Built by Heath-Zenith. Link to comment Share on other sites More sharing options...
Machiner 55 Posted April 4, 2013 Share Posted April 4, 2013 Dave,Just wanted to get that out there. Eddie Voland has been recommended by others on this forum. Have not used his services, but plan on doing so as the funds become available.Someday, I'd like to see KDirk's work area. Probably neat as a pin. Unlike mine, where I find what I'm looking for only when I don't need it any more.John F. Link to comment Share on other sites More sharing options...
DAVES89 Posted April 4, 2013 Author Share Posted April 4, 2013 KDirk is probably very neat. He drove up to go junking with me and I was impressed for how clean his car was. And then he told me that he has no inside storage for his cars. That car was showroom clean. Me? I have to put my stuff away because if I didn't I wouldn't know where to find it. Link to comment Share on other sites More sharing options...
padgett Posted April 5, 2013 Share Posted April 5, 2013 "Stuff" fills all available space. Freedom is not having any. Link to comment Share on other sites More sharing options...
pontiac58 Posted April 5, 2013 Share Posted April 5, 2013 About two years ago I picked up a CRT from Gibson's for about $10.00 Shortly after I installed it, the CRT screen started getting a little"squigly" along the bottom 1/3 of the screen and then would snap straight and be good and then go back to squigly. About a week ago it went black for about 5-10 seconds then came back on perfect, then back to squigly. This morning it happened again. I guess the end is near, and I will be swapping it out when it completely fails, but the point I want to make is while this unit has been failing for some time, I am surprised at how long it took to die.Mine on my 88 was doing the same thing-work like new one day then squiggle one day-sent it to Eddie Voland and presto it came back in several days and works like new and has for a year or so-am very happy with his work.Bob-Tn Link to comment Share on other sites More sharing options...
KDirk Posted April 5, 2013 Share Posted April 5, 2013 (edited) Oh yeah, the jiggy screen issue. I have 3 CRT's that do this, one that has lost horizontal sync, and one that is flat out dead. Actually getting a shopping list together for Digi-Key to order capacitors, transistors and various other stuff to rebuild a couple of CRT's, a CPS, 88/89 blinker module and a few other things to have on hand as spares. And my work area? Well, right now it is a disaster due to having too many projects going at once, and having to move it from it's previous spot due to getting a new "toy" - and a very large one at that - about 2 months ago. A Rodgers 750BE classical specification organ, picked up for the stupidly low price of $300 from a church that no longer needed it (they went with the super happy fun praise band instead of traditional music) as I needed a decent practice instrument. This beast now sits in a corner of my basement carved out for this very purpose. It did necessitate some re-arranging of other things however. Also forced me to declare some other stuff "junk" so I could free up space by discarding said junk. A picture for anyone interested (this was before moving it,I do not have stained glass windows in my basement):Getting the electronic kinks out of this has taken up much of my time lately. This organ is 30 years old, believe it or not. KDirk Edited April 5, 2013 by KDirk (see edit history) Link to comment Share on other sites More sharing options...
ol' yeller Posted April 5, 2013 Share Posted April 5, 2013 Big deal Kevin. My organs are almost 60 years old.....although some could use restoration. (hee, hee) Link to comment Share on other sites More sharing options...
Machiner 55 Posted April 5, 2013 Share Posted April 5, 2013 Kevin,Maybe it's just me, but I think the clutch, brake and gas pedal are too close together.And... where's the steering wheel?John F. Link to comment Share on other sites More sharing options...
Guest Mc_Reatta Posted April 6, 2013 Share Posted April 6, 2013 Oh yeah, the jiggy screen issue. I have 3 CRT's that do this, one that has lost horizontal sync, and one that is flat out dead. Actually getting a shopping list together for Digi-Key to order capacitors, transistors and various other stuff to rebuild a couple of CRT's, a CPS, 88/89 blinker module and a few other things to have on hand as spares. Does this mean you identified a horizontal circuit chip that would work in our CRTs? Link to comment Share on other sites More sharing options...
Guest steveskyhawk Posted April 6, 2013 Share Posted April 6, 2013 I have OVERHAULED CRT/touchscreen units on the shelf and ready to ship. I pay $50 for suitable cores payable upon return. No need to pull out the one out of your dash and ride around for a month with a hole in the dash waiting for it to be repaired. Contact information in my signature. Link to comment Share on other sites More sharing options...
KDirk Posted April 7, 2013 Share Posted April 7, 2013 MC-The horizontal processor circuit IC is an 8 pin DIP marked "221-86", presumably a Zenith house number. This crosses to an NTE836, so I am operating on the presumption that is the correct part. The vertical control IC is a 7 pin vertical zip tab TO-220 device on a large heatsink at opposite edge of the board from the flyback transformer. Number on this is 347-01-B02, is marked as an ST microelectronics part but appears also to be a house number. No cross on this one yet, but I am working on narrowing it down. KDirk Link to comment Share on other sites More sharing options...
DAVES89 Posted April 7, 2013 Author Share Posted April 7, 2013 A moment of silence please. The CRT passed away this morning at 8:40 as I was on my way to church. The touch pad is near perfect and will look good in a shipping box to anyone who wants her. She served me well these last two years but she just couldn't fix herself and I didn't have the skills to save her. Please let me know if you want her. How's that for a bent sense of humor? Link to comment Share on other sites More sharing options...
Guest steveskyhawk Posted April 7, 2013 Share Posted April 7, 2013 I pay $50 for good cores like this. The touch screen must be in nice condition. My shop hasn't found a source to restore the touchscreen finish Link to comment Share on other sites More sharing options...
Guest Mc_Reatta Posted April 7, 2013 Share Posted April 7, 2013 Sorry for your loss Dave, I'm sure you said a prayer to pave its way to Reatta heaven this morning. Thanks for that info KDirk. I'll check my FLEPS for that NTE part. As the summer heat returns, I expect my CRT will return to its bottom third squiggles again. Definitely thermally related in my case. If you find a cross for the flyback, let us know that one too. Link to comment Share on other sites More sharing options...
2reattas Posted April 7, 2013 Share Posted April 7, 2013 I could use the touch pad Link to comment Share on other sites More sharing options...
KDirk Posted April 7, 2013 Share Posted April 7, 2013 I am putting together info to refurbish the touch pad, I have some stuff on order to test out and see how well it holds up. If it is good enough for long term use, then I will post here with the results. To summarize, the touch panel is a two-layer piece of hard plastic with transparent conductive traces in between. The plastic layers are just pliable enough that when a touch point is contacted, it flexes and makes contact between two points on a row/column bus in between the outer two plastic layers. This part of the touch pad is seldom damaged unless extreme abuse has occurred (like someone scratching the screen purposely with an awl or some such implement). The hard plastic outer layer is then overlayed with a piece of tint film (presumably to improve sunlight readability and protect the CRT phosphor coating from direct sunlight exposure). Then, a thin textured plastic anti-glare layer is applied to the tint film, this is the part your finger actually come in contact with. After 25 years, many of these have a lot of wear in the anti-glare layer due to fingernail contact and such, and look kind of ratty. In extreme cases, the wear has gotten into or through the tint film as well. In most cases replacement of the tint and anti-glare layers will make the touch panel look brand new, as the hard plastic part has generally not been damaged. I have a unit I took apart quite a while ago that had gouges in the surface. That is when I discovered the way the touch panel was made, and that the damaged surface can be peeled away and replaced. I have a source for the tint film, but have not yet found a good anti-glare layer that I am happy with. Since the advent of smart-phones and the screen protectors that are sold for them, there seems to be a wider availability of protective plastic overlay materials. I'm just having some difficulty finding a product that I feel is up to the job, both in durability and optical characteristics. Stay tuned. KDirk Link to comment Share on other sites More sharing options...
DAVES89 Posted April 8, 2013 Author Share Posted April 8, 2013 I could use the touch pad Please see the Reatta Buy/Sell... Link to comment Share on other sites More sharing options...
DAVES89 Posted April 9, 2013 Author Share Posted April 9, 2013 I pay $50 for good cores like this. The touch screen must be in nice condition. My shop hasn't found a source to restore the touchscreen finishSteve I think you should clarify your statement. What I believe you mean is that you give a $50.00 trade in allowance on the sale of a reconditioned unit. Is that correct? Link to comment Share on other sites More sharing options...
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