Question about Televison & Video

Open Question

Standby mode only. led standby mode turns off after switching on but still no video or audio. its like deadset. already replace horizontal output transistor but still the same. pls help

Stanby mode only. after switching on led standby mode turns off but no video or audio, its like dead set. already replace horizontal output transistor but still the same. pls help me with this

Posted by on

Ad

6 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya Technician can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repair professionals here in the US.
click here to Talk to a Technician (only for users in the US for now) and get all the help you need.
Goodluck!

Posted on Jan 02, 2017

Ad
  • 1694 Answers

SOURCE: RCA..PTV..P60924..CTC195M..NO START UP.

High failure parts = Flyback.....# 239111 and HO transistor =
237470 ....DO NOT USE cheap generic.................T.

replace both at same time......................T.

Posted on Dec 21, 2007

Ad
  • 27 Answers

SOURCE: flyback transformer and horizontal output transistor change out

There is a little loose sleeve at the transformer. It can be pulled out, but it is best to squeeze the sides through hole on each side of the terminal to remove the sleeve. The wire just comes out with a small pull afetr the sleeve is removed. Good luck.

Posted on Apr 30, 2009

Slinteriors
  • 8617 Answers

SOURCE: I have a RCA R52WH74 SER# G392C104J1 chas # ITC222A

If the Horizontal output transistor was blown the flyback will need replacement. You can get replacement flybacks from www.tvrepairworld.com

Posted on Dec 30, 2009

panchal643Ja
  • 243 Answers

SOURCE: TV repeatedly goes into standby mode and then comes back on

Resolder Horizontal section & SMPS Power Supply with Soldering Iron

Posted on Jan 19, 2010

jdvillanueva
  • 2098 Answers

SOURCE: dead set ; fuse ,

Hi,
You need to confirm where is the trouble before replacing any parts.
Test the B+ on the H-out transistor.
No-check the B+ on 160v electrolytic cap.
If No B+ here then the trouble is in the regulator section before the chopper if it has.
Let me know the reading from your ohmmeter.
Thanks for using Fixya.
JDVillanueva

Posted on Feb 03, 2011

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

I have a sharp tv. it stays on standby mode. LED lights up. i already resolder the whole board including the jungle ic. fly back is good


Do a hard reset to this set, and check. To make it a hard reset, just unplug the TV from AC mains wall socket, and re-plug it back after 15 minutes or so.
Check and replace damaged component/s at its horizontal scan output section circuit. Check the LOT (Line Output Transformer) too for damage. Replace the horizontal scan output transistor. Check the input voltage to LOT. If the voltage is absent check the feeder resistor; if any. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts.
http://electronicshelponline.blogspot.com/
Type in the brand name of your device, in the search box [at the top right] of the display window, and press enter to get all related posts. It will make surf easy.

Jan 19, 2015 | Sharp Televison & Video

2 Answers

No power on (LCD27TV006HD)


Hi,

Does the standby light continue to blink? IF so, count the number of blinks and go to:


Continuous Blink Once A Second, No Pausing As Discussed Above---
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 Vert. Deflection (V STOP), Screen goes to a single horizontal line then the video signal muted. Check IC1509, Q1505

FIVE Blinks---AKB circuit (AKB), 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. Also unit 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 Blinks---Problem with the audio (AUDIO), unit goes to standby and blinks the self-diagnosis code. Check IC406 audio amp, PS401 and 402.


That may help you decide what is going on.

In the long run you will probably need to have a tech take a look at it. The problem you describe is usually a serious matter that needs repair by a trained technician..

Goodluck,
Don't forget to rate me as fixya...

Feb 03, 2008 | Televison & Video

1 Answer

Why my sony TV ES29M80 switching to standby mode immediately?


Check and replace damaged component/s at its horizontal scan output section circuit. Check the LOT (Line Output Transformer) too for damage. Replace the horizontal scan output transistor. Check the input voltage to LOT. If the voltage is absent check the feeder resistor; if any. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts.
http://electronicshelponline.blogspot.com/

Sep 04, 2014 | Televison & Video

1 Answer

Samsung dnie jr


Check its Line Output Transformer [LOT] for damage. Check and replace the horizontal scan output transistor too. For more information go to http://electronicshelponline.blogspot.com/

Dec 15, 2013 | Televison & Video

1 Answer

UOC Chassis TDA 11105 Standby LED not working and system EGT not working


Check the horizontal scan output transistor have collector-to-emitter leak. De-solder out it from the circuit, and switch On the set. If standby light glow now, make sure that it is damaged, and replace it with a new one.For more information go to http://electronicshelponline.blogspot.com/

Dec 02, 2013 | Televison & Video

1 Answer

My tv turns off when I am watching tv


The number of blinks from the standby LED on the front indicate specific error codes and possible fault conditions.

(from an article on understanding Sony TV error codes):

Many of the later model Sony TV's have a built in self-diagnosis function. If the timer/standby indicator is blinking, this could be an indication of a problem with the unit. The diagnostic blinking will occur automatically with no action required by you to engage it.

The timing of the blinking you see would be as follows: two to nine blinks, (depending on the fault), about a third of a second apart, then a pause for 3 seconds, then the two to nine blinks about a third of a second apart again.

Here is a list of the problems that might have occurred indicated by the number of blinks.

* 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 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.

If this is a CRT TV, it could prove expensive in terms of repair, as if it is shutting off and the standby LED is blinking, it means the set has entered protection mode, due to one or more components shorting or going leaky. Horizontal output transistor and flyback transformer are the most likely culprits to cause the set to shut off while you are watching it so check those first along with any suspicious looking components in the power supply (bulging or crooked electrolytic capacitors, diodes, resistors that look discoloured, etc.) and measure what you can if you have access to a digital and analogue multimeter.

If you have some basic experience and knowledge of electronics, and you understand the potential risks involved, you can have a go at fixing it yourself. Unless you really know what you're doing, and have the confidence to match, I do not recommend this practice.

You can however, do some simple visual checks of your set which don't require any special tools. Start by checking the power supply and working your way toward the horizontal stage; and make sure when replacing the flyback transformer, that the correct part number is ordered and fitted for your model - using the wrong type can either be underpowered, resulting in a dull picture, or no picture at all, or the set simply won't start up.

The same applies to the horizontal output transistor - this is important - it must be the correct rating for your set, along with the correct pin type and orientation (you can check these details on the original parts in your set as a guide to suitable replacements).

Use the wrong type and you will do more damage. Horizontal output transistors have a tendency to go off with an almighty BANG as do chopper transistors in power supplies if they are replaced with underrated or cheap equivalents, so that's something to keep in mind when replacing this and unless you get the manufacturer recommended part, the reliability factor can be anywhere from excellent to nil.

It's also a good idea to check the tuning capacitors on the collector circuit of the horizontal output transistor, as these may have dropped value over time, and replace (with correct type and voltage rating) to prevent risk of expensive/dangerous pyrotechnics and irreparable damage in the future.

When repairing the horizontal stage in any CRT TV, and such involves replacement of the flyback transformer, the horizontal output transistor and tuning capacitors must also be replaced at the same time.

When repairing the switchmode power supply in any CRT TV, all electrolytic capacitors must be replaced at once, and any leaky or open circuit diodes, transistors, and resistors must be checked and replaced accordingly.

*Don't forget to touch up any dodgy solder joints on the chassis just to be sure after replacing the flyback transformer, horizontal output transistor, and tuning caps. Most bad solder joints would exist around input sockets, the function buttons and the ON/OFF switch on the front so check these as well.

Hopefully your set will work a little better after that. If not, put it aside and consider a newer TV with extended warranty (covering you against any defects, faults, and so on).

The best bet is to obtain some quotes if necessary on the likely costs to fix this first and then weigh up the pros and cons of those - you can then choose to go ahead and get it repaired properly by a qualified service tecnhician (if you don't want to fix it yourself) or cut your losses and buy a new set.

Feb 11, 2013 | Sony FD Trinitron WEGA KV-34HS420 34" TV

1 Answer

I have a Av receiver tx-sr506,and it has these proble,the standby led is flashing and when turn on it goes back to the flashing standby mode,can i have any idea to fix it or any tech who can fix it.


The flashing indication is telling you to seek professional help. You have have a short circuit in your output stage and your Onkyo is going into protection mode to prevent further damage. The least you can do is to switch off speaker A and B and try switching on the Receiver. If the then the system turns on you have an external shorting in the speaker wire or speaker itself.

Apr 11, 2011 | Audio Players & Recorders

1 Answer

The tv won't come on...when you turn it on the green light on top comes on...blinks twice and then goes off


Hello

There is some short circuit in the horizontal output section inside your RCA tv. The blinking of ztandbylight twice denotes it. it may be due to a short in the horizontal output transistor, or defective LOT [Line Output Transformer]. Remove the horizontal aoutput transistor, by resoldering it out. It can be located very near to the above said LOT, screwed on to a metal heatsink. It is a three terminal device usually black in colour. After resoldering it out, switch on your TV, and see whether the standby LED blinks or not. If not, replace it with a new one, and switch the TV for a short time, say 3 seconds or so, and switch it off, unplug it from mains supply, and feel the heat of the transistor replaced. If it overheats, LOT said above is defective, and should be replaced with same type and number. OK.

Jan 05, 2011 | RCA F32450 32" TV

1 Answer

My receiver will not turn on and the red standby light flashes. What is wrong?


Flashing standby light shows that protection mode is activated in receiver because of some problem in output amplifier section.
Please check output amplifier section and replace defective component to fix the issue.

Jun 17, 2010 | Aiwa AV-DV75

1 Answer

I was watching my kp61v80 and the screen went black-can you give me the trouble codes for the flashing standby light


Diagnosis item
TIMER/STANDBY
Indicater
Number of blinks
Supposed malfunction Condition
Self-diagnosis
screen display,
Diagnosis item: Results
•Power not ON 0
[Standby Power Supply System]
F601 open.
R607 open.
Q601 short circuit
[Main Power Supply System]
IC601 and R612 are broken.
VDR601 short-circuit
Cannot turn on the power.
LED doesn't blink.
+B OCP detection 2times Short circuit of power supply system in each circuit.
Goes to the standby mode
Short circuit of +B line
2 : +B OCP 000
+B OVP detection 3 times
T603 pin 78 open.
R672 open.
Goes to the standby mode
Malfunction of power supply circuit
3 : +B OVP 000
Vertical deflection stop 4 times
IC1509(V out) is broken.
Q1505(V Pulse Buffer) is broken.
Raster goes to one line horizontally, Aand then video
signal is muted.
4 : V Stop 000
Video out abnormality detection 5 times
Video out, Q705, 732, 761 and others in C board
circuit.
Q218, 219, 220 (A board)
TIMER/STANDBY LED blinks approx. 30 seconds,
and then blinks for the self diagnosis.
5 : AKB 000
Horizontal deflection stop 6 times
C515, 516 open.
IC206(YC Jungle) is broken.
Raster doesn't appear. 6 : H Stop 000
Audio abnormality detection 8 times
IC406(Audio amp.) is broken.
PS401, 402 open.
The sound is not out.
Goes to the standby mode
8 : Audio 000

Jun 17, 2009 | Televison & Video

Not finding what you are looking for?
Televison & Video Logo

Related Topics:

71 people viewed this question

Ask a Question

Usually answered in minutes!

Top Televison & Video Experts

The Knight
The Knight

Level 3 Expert

74634 Answers

Donald DCruz
Donald DCruz

Level 3 Expert

17130 Answers

Electro Med Services...
Electro Med Services...

Level 3 Expert

6694 Answers

Are you a Televison and Video Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...