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Re: I have a 26" Sanyo
The vertical IC either has bad connections on it or hit has failed completely. These are common ICs and are available for about $12-$20. If you can solder, you should be able to repair this yourself. Open up the back and look for a small flat IC with about 11 pins attached to a heat sink. It will be marked LA7837 or something similar. Try resoldering the pins first. If that fails to resolve the problem, replace the IC. If you have any question about whether or not you have the correct part, post the marking here and I'll confirm the part.
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2blink-then 4 blink---------vertical circuit problem
This is a general answer based on error code--problem in vertical circuit then the first thing is to look for ANY signs of Glycol having leaked from one of the picture tubes onto that area of the board.
If you do not know how or what to look for let me know and I will explain.
Vertical circuit deflects picture from middle to top and middle to bottom of screen; if set detects that it shuts set off instantly to prevent a instant BURN MARK from happening on all three tubes this set uses--prevent permanent damage to the screens of the tubes.
These units are close enough to the warranty end period that I would suggest that you contact Sanyo and Sony requesting warranty service. Talk to a supervisor and be persistant. It may take a few calls.
Keep us posted.
I have a similar problem with an LG (except my red is the one that is fine) and was able to talk to a tech in some detail about it. The tech prefaced by saying that he had done a hundred or so of these with exactly the same issue. This is very common and the life span of rear projection televisions is not great. Having said that, plasmas and LCDs are also limited in life span mostly due to modern high performance gaming machines which shorten the lifespan of monitors both plasma and LCD alike.
From what I have gathered, this is not a problem that you can easliy sort out. (Of course they would say that though) It involves replacing the digital board which means soldering followed by aligning the lamps which requires quote a lot of expertise.
The part itself apparently costs around $200 Australian and the labour will vary for the cost of the technician but I was quoted that the labour was about the same cost as the part.
Not sure if I would call this solved but I hope it has been at least a little helpful.
convergence power supply not working , there is a mini fuse close to the flyback thansformer , 400miliamp at 250 v resolder the flyback and replace this fuse , there is 3 fuses it look like small squer brown color is the one on the middle , normal repair $200 - 300
module problem take it to a Authorized dealer or a NESDA dealer service manuals hard to say if available since analog TVs are slowly going away and parts well another story might as well go buy a new HDTV set as a CET no garuntee how long it will be analog TV parts will be discontinued. FCC has alot to do with it.
I can't tell you how to fix this set, but I can tell you that its not a "lamp" issue as this doesn't have a lamp. Its a 3 picture tube projection TV. the three tubes are in a red green blue format, and average about $175 for each one, not including the labor to install them. your problem, may not be the tube, but just a power supply problem, but there is a chance it is.
Sound like you lost Vertical Deflection.Youshould not have a line across the screen because this could destroy the threeCRT Red, Green, and Blue (Picture tubes) if left on to long.There is a protection circuit built in to protect your CRT’s.Check on the PCB-SIGNALboard (Tuner located on this board) transistors Q-206 Collector should be around 1 Volt Base and Emitter 0V. If the voltage atthis point is greater then 5 Volts the Vertical output IC-401 (Mounted on heat sink 7 pin inline IC) is bad, Part # LA7845. Pin Voltages should be PIN 1= 0V, 2= 34V, 3= 32V, 4= 3V, 5= 3V, 6= 33v, 7= -6V. Data sheet located at http://pdf1.alldatasheet.com/datasheet-pdf/view/40357/SANYO/LA7845.html
1. THE SYMPTOM IS BRIGHTER IMAGE ON THE SIDES AND DARKER IN THE MIDDLE. THE PROBLEM CAN BE WITH RED BLUE AND/OR GREEN. CHECK FOR PROPER CONNECTIONS TO THE "DAG COATING AND CONNECTIONS TO PIN 9 ON THE SOCKET OF THE AFFECTED CRT. MAKE SURE THESE GROUND POINTS ARE COMMON WITH CHASSIS GROUND.