Thanks for providing such a great resource.
My TV woke up with a headache. Convergence is suddenly way off, all colors, with curved picture. So I think it's not a problem with the 6 individual ICs, but whatever "master controller" drives or powers them. Any ideas on what to look for? It's a 2002 SONY KP65WV700 CRT RPTV.
Newbies like me can't post URLs, so I can't show the picture. But the picture is curved, with exaggerated convergence at the edges. Blue and Red are about 8" apart at the screen edges. Picture is perfect in the center of the screen.
Adjusting the convergence crosses (manual convergence) has no effect - they don't move, and the built-in auto-focus starts and then aborts in a few seconds.
Due to convergence problems, i have taken your suggestion to replace the convergence ICs. The original chips were STK392-110. For this model tv, would you recommend replacing with the same chip, or upgrading to the STK394-160?
Also, if I use the same model chip, does the manufacturer matter? I checked the tritronics site and they have a Panasonic brand STK392-110 for ~$51 and a Sanyo brand STK392-110 for ~$16. Is there a difference and what would you recommend?
Thanks, I did read all those posts. I wasn't sure if you recommended the STK394-160 as a replacement for the STK392-110 for all TVs (I know you said most) and/or whether the Sanyo brand was equal/superior to TV manufacturer brand in all cases (and specifically in the Panasonic case). Is there a chance in my case that the STK394-160 would NOT work as a replacement or the SanyoSTK392-110 would not work?
There is always a chance, but I have not run into a situation where the STK394-160 would not replace the STK392-110. The -110 chip should always be upgraded to at least the STK392-150, but I never bother with those. I have used the -160 in the Panasonics and had no problems. You shold be aware, however, that there are other issues with the Panasonics that can be a challenge to service. Be careful.
It is very important to use a good supplier for the parts! ALL of the manufacturers use Sanyo chips. The danger is some cheap copies or seconds that get into the market. When you buy through the TV makers you are more likely to get first quality parts. In the case of the -160, they have only been available in the Hitachi kits for a long time, though some form of them are starting to show up elsewhere. I do not know if they are first qualtiy original Sanyo chips or not, so I just buy them in the Hitachi kits. It is a little more expensive, but I know I am getting good parts.
I do not use the TT version of the STKs from Tritronics. The source is uncertain. Just buy one of the Hitachi kits. They have two ICs and a bunch of resistors that you will not likely need, but you know you are getting first quality parts.
I was just warning that I do not trust the TT parts. The part numbers for the kits that I list in the parts post are the numbers that we use to buy them all the time. Just got a couple in from TriTronics a couple of days ago. Just check stock by those part numbers at any of the Hitachi distributors. Vance Baldwin is another good one, as is Andrews.
I checked those Hitachi Kits at the sites like Titronics, Andrews and Vance. Titronics is the only site that lists the contents of the kits, and none of them have the STK394-160, they seem to use the STK392-150. The other sites don't list the kit contents. Any suggestions as to which kit from which distributor will have the 394-160?
Like I said, we buy them all the time from TriTronics, and all of the kits they have now have the -160. Hithachi originally upgraded the STK392-110 to the STK392-150, then later to the STK394-160. TriTronics sold through the old kits long ago as far as I know. If you are in doubt, call them and ask.
I just called them and they said all their kits come with the 392-150's. They sell the 394-160s separately (that was the link I posted originally), but supposedly not in any kits...little confused here. Does it matter, or should I just get the kit and use whatever comes in it?
Thank you for so much information. I have followed your advice and bought a Sony replacement "kit" STK394-160 to upgrade the original STK392-110's I have in my Toshiba HD TV. I have the set pulled apart and find the IC's sandwiched between the heat sink and a soldered in vertical card. There is no room to remove the screws from the IC's. Only approximately 1/2 inch clearance in front of the screws. I would hate to unsolder that entire vertical card. Do you have any advice for me??
I've just joined the forum, and I must say this thread has been the most informative I've found so far - thank you for all the info you've provided at the start.
The vertical convergence of the blue on my Pioneer Elite Pro610HD just went, resulting in a large, sweeping "wave" of blue along the bottom of the screen. After researching many forums, I've come to the conclusion the one of the STK's has gone bad, or a bad solder joint (well aware of Pioneer problems, I fixed the power supply a long time ago)
What would you recommend for STK392-110 replacement on this particular model? Some sites say STK 392-150, yours recommends STK394-160, which seems to be hard to find on the companies listed on the distributors thread.
I'm pulling the conv. block tomorrow to check for obvious problems, may have to get resistors and pIco fuses as well as the STK's ( I'm hoping just bad solder), do you recommend a place that has it all, perhaps a kit? Thank you for your help.