20 Most Recent Sony FD Trinitron WEGA KV-34HS420 34" TV - Page 8 Questions & Answers

there are two possibilities for such type of a problem
the first one is the control ic which produces those three colours.
the second one is the crt tube if its about to finish such faults do come.

let your tv power supply be checked. its not producing the required voltages at the out puts.
the components to be checked are tin capacitors, zener diodes for open and shorts, and semi conductors for shorts and leaks.
this should be done at a w/shop if you dont have the technical knowhow.

if you cant repair a tv take it ot a w/shop and have it checked. let your tech check that an ht voltage of 95-105 is reaching a line transistor, also a transistor be checked for leaks, also let him check a line transformer, and the surrounding tin capacitors for leakages and change of values.

check your power supply or line transformer sections. you are having variations of power and leter semi conductors go into saturation.
i have mentioned a line transformer because before a line transforfer there is a transistor, which makes a transformer to oscillate, and later a transformer will give out so many dc voltages.

if won´t power on manually or using remote control, may be you have an power supply or horizontal output trouble, first check that your outlet is powered with something, use an radio for example.

my power supply for tv is blowing a fuse

Sounds like no vertical deflection,unplug the tv,take off the back, find IC1509,check it ,look for swollen or puffed up or leaky capacitors around this,replace if check faulty,also check Q1505. .....hope this helps..

Well it could be a fuse,...check R612,R607,Q601,IC601.....if tou replace the fuse,replace it with the same amps...hope this helps

• Unit is dead, No blinks - Problem in the standby power section. Might check fuse, R607, Q601, IC601, R612 and VDR601 (should show open).
  
• Continuous blink once a second, no pausing - No reply from the jungle IC301 (data bus is busy, shorted to ground, or held high), IK video path is defective.
  
• One blink - not used for the self-diagnosis
  
• Two blinks - B+ over current protection (OCP), unit goes to the standby mode then displays the 2 blink fault. Could be a short in the power supply of any of the circuits.
  
• Three blinks - B+ over voltage protection (OVP), unit goes to the standby mode then displays the 3 blink fault. This is also a problem in the power supply circuit, check T603 and R672.
• Four blinks - No vertical Deflection (V STOP), Screen goes to a single horizontal line then the video signal muted. Check IC1509, Q1505
  
• Five blinks - AKB circuit (automatic kine bias), the timer/standby indicator blinks for about 30 seconds then goes to the self-diagnosis function. Something is wrong with the video. Check video out, Q705, 732, 761 and other components on the C board, also check Q218, 219, 220 on the A board. In addition, unit could be in IK blanking, try turning up screen slightly.
  
• Six blinks - No Horizontal (H STOP), no raster, goes to the blinking self-diagnosis function immediately. Check C515 & 516 and the jungle IC, IC206.
  
• Seven blinks - High voltage shutdown. The high voltage has exceeded 33k and the unit goes immediately into safety shutdown. Check power supply regulation and horizontal circuits.
  

• Eight GA_googleFillSlot("TL-IMU-Article"); GA_googleCreateDomIframe('google_ads_div_TL-IMU-Article' ,'TL-IMU-Article');blinks - Problem with the audio (AUDIO), unit goes to standby and blinks the self-diagnosis code. Check IC406 audio amp, PS401, and 402. On some projection models of Sony TV sets, this code means that T8005 (flyback transformer), or the associative components in the high voltage circuits are defective on the D board.

• Nine blinks - Replace D 6116 and D 6301 on the "G" board, do not resolder as this will fix the problem temporary. Or Panel Module Error or Thermal Error. If it is intermittent 9 blinks, meaning sometimes the TV comes on and other times you get flashing, then change the switching regulator on the "G" board or check connections. Make sure the regulator is -12 or -13 (negitive).

Ten blinks - Check Q8014 and Q8013 for shorts, leakage, or bad solder connections on the " D" board. If the transistors are bad, check R8051 and IC8005, also on the "D" board.

take your tv to a repairing shop and let your technician check the power supply section is not producing an ht to trigger the line transformer, in turn various voltages will be produced, which will open up your tv.

i think p-t is ok... line o/p transformer is out of order

How old is this tv?More than 5 years old.Not worth it to repair CRT tv at this prices.Tries unplug,replug an hour later,might help,see if reset itself.U can buy a pretty good 32" LCD tv at $400 or less these day.It not heavy as the CRT tv,it alot easier to move the tv around the house or other locations.

this is a high voltage shutdown.......the high voltage has exceeded 33k,.....it causes the unit to shutdown for safety.check the power regulation as well as horizontal circuits.hope this helps

check C515 & C516 & IC206.hope this helps

Hi gart
i`m gonna try to help you but first could i have your tv`s model number.
Also could you count the blinks from the red light.
You see in sony tv`s red light in front will blink in sequences that gives an indication about the fault.
The number of blinks will happen in a sequence of 2 to 9 and there will be a pause then start again.
be waiting for your reply

The caps (capacitors) in the powerboard are going out. This is a very common problem in all class and price ranges of modern lcd and plasma tv's/ monitor's. I don't know if this problem has been like this for awhile or it just started, but either way, if the tv takes an abnormal amount of time to "warm" up then it most likely will go out all the way sometime in the (near) future. If you have a tiny bit of will and knowledge ypou can open the unit and get to the print board. Examine this for "popped" capacitors, they will have a buldging top instead of a flat one. Im gonna try to include a pic of them here, if i can get it this time, I've tried bfore lol. But you can google image a "popped" or "bad" capacitor and you would be able, with ease, to diagnose if you have any of these. Usually only one or two. Radioshack sells capacitors (couple anyway) for $1.59 each. MAKE SURE the replacement is of the SAME voltage or HIGHER, or you will be right back replacing those 2. Every capacitor has a negative pole marked with an (-) on the side of the capacitor(by one of the "legs", always puit the negative (-) "leg" of the new capacitor in the same hole in the printboard as where the previous negative (-) "leg" of the capacitor was ( a capacitor with the negative and positive "legs" put in backwards will result in the new piece "popping" as sson as you turn it on!!) make sure the "uf" rating (for example the most common popped capacitor is the 1000 uf) is the same as the one you are replacing. I needed 1000 uf, 105 c and 26v (volt) ratings for the 1 capacitor I needed to replace to fix my LG 19" lcd panel monitor I found by the trash that the light came on off, but it didn't come on. I replaced that capacitor with ; 1000uf, 85 c and 36 v (volts0...It works fine eventhough the volts and the temperature rating (36v and 85c) was not the same as the (26v(volt) and 105c ) capacitor I removed !! Further, I've replaced capacitors that had the celcius rating of 105 with the only ones Radioshack had, namely 85 c(celsius) they have been working great, but I'm not sure about any effect, nor have I heard or read (yet?) about that making an urgent difference. Many threads that I've read people have done the same, so we should be ok (my stuff has been running good for a while longer then most brand new ones!.............(all these ratings ; 'uf ' and 'c' etc are on the side of the capacitor you are replacing and on the side of the ones you are replacing them with)...For all this all you need is the cheapest solder gun u can find (I bought one for $7.99 at Radioshack), a camera (to take pictures as you go to remember how to reassemble the unit) and, once you have your materials, 20 minutes to replace 2 or 3 capacitors and you are good to go...Most monitors and tvs (lcd/plasma) I've seen you have to lay flat on the ground/bed/blanket etc, to work on (screen side down). Usually there are 2 or 3 screws (or a few more) to remove, then you will have to carefully (its comes off easily most times)insert a flat screwdriver inbetween the casing and gently pry it up as you go around the whole frame. Sometimes you have to remove the little washer arouind the cable input orso, just be gentle and you cant go wrong. Once insidet here will be a box with wires running to the sides etc...unplug, gently, these wires and open the box. Inside you will find 2 or 3 circuitboards, check them all for "popped" capacitors, replace, reassemble and plug it in....Have fun becoming an overnight tv mechanic lol!

If this helped you (or not), then please rate!, thank you.

U HAVE TO CONSULT TECH PERSON...THE PROBLEM SHOULD BE WITH DISPLAY BUTTON OR THE MEMORY IC OF YOUR SET MUST BE REPLACED

Take a hammer and smash the unit

Best to contact sony, local game repair shop.

I am trying to find the solution myself