Question about Insignia LCDTV26 26 in. Television

2 Answers

IS-TVHD30 hi im having the same trouble with the same tv no power but a low clicking noise there looks to be 2 diodes that look burnt but i can't find a service manual i've been searching for days can you posibly help thank you mike ps used lcdtv26 because tvhd30 kept coming up as a invalid product

Posted by on

  • sellarsaz Jun 07, 2008

    Our Insignia IS-TVHD30 shut off while kids were playing a game.

    Took off the back panel to see if I could see any burnt out or black diodes. All took good and the fuse looks good. It is making a clicking noise when the unit is plugged in and the fuse is in place. If I take the fuse out the noise stops.

  • azrez Sep 15, 2008

    I have the same low level "clicking problem" and no power to the TV. The possible problem is a burnt power supply. I have yet to take it out of the armoire to investigate.

×

2 Answers

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 1 Answer

I fixed the problem with the "no power on, low clicking noise". The NPN transistor (2SC5931) was shorted. This transistor controls the horizontal hold. The shorting caused the power supply to overload and restart, then recycle. This was the cause of the clicking noise. Unfortunately this transistor was over $50, most likely due to the extinction of CRT's. I did find a replacement transistor 2SC5552, which only cost $2 (but I was able to get it in Mexico). The location of the transistor is located on the left side of the TV (looking from the back). Directly in front of it is the high voltage transformer which powers the CRT (should have a thick red wire). The transistor is attached to a large aluminum heatsink. To remove the transistor you will have to remove the entire electronics assembly to you can easily get to the underside. This was the solution for my TV, but there could be other components damaged.

Posted on Sep 30, 2008

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 1 Answer

I woke up this morning and noticed mine had the green light flashing- when i got home from work i tried to turn it on but no power, only green light flashing and a clicking sound every second, unplugged it for a few minutes- now i dont even get the flashing light.

Posted on Aug 13, 2008

1 Suggested Answer

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 expert 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 repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

Ln52a650a1fxza keeps powering on, off,on etc caps looked good, but, replaced anyway-- checked diodes all ok outputs on cn801 all ok same problem persist Any suggestions thanks


Hi,
this is a problem with this model with a manufacturing date between:2/2007 and 4/2008 and that it was related to a faulty batch of capacitors.Samsung have been extending warranties for some customers to save face a little, have a look here for more info:
Samsung TV Keeps turning off and on Forums CNET

Feb 09, 2016 | Televison & Video

Tip

Shorted Rectifier Diode (fuse keeps blowing)


jdvillanueva_14.jpg
This CRT tv is dead set, no reaction when the power button is pressed(no standby led light). I've open the back panel and check the faulty parts.
jdvillanueva_15.jpg

As you can see the fuse was badly burnt-out indication of excessive current due to short circuit.
jdvillanueva_17.jpg

I've checked the parts feeding the AC line to the power supply board (Power cord, VDR, Ceramic capacitor, Coil, Posistor, Degaussing coil) one by one and I've found out that one of the four rectifier diode has a leak which caused the glass fuse burnt-out.
Here's how to test the rectifier diode.

Good Diode
Note : Forward and reverse bias depend on what type of ohmmeter are you using, here I'm using a Japan Standard(Sanwa Brand).
jdvillanueva_21.jpg

Using an ohmmeter set it to X10 to see much easier the leak from the diode in reverse bias.

Forward Bias : test the diode by connecting the red test prod of the tester to anode and then the black test prod to cathode of diode. You will see the pointer will reads a faily low resistance(above picture).
jdvillanueva_22.jpg

Reverse Bias : test the diode by connecting the red test prod of the tester to cathode and then the black test prod to anode of diode. You will see at the picture(above) that the pointer didn't react (remains in infinity). This is a good diode.


Bad(leaky) Diode
jdvillanueva_23.jpg

Forward Bias will reads fairly low resistance.
jdvillanueva_24.jpg

Reverse bias unlike the good diode the pointer will also reads a fairly low resistance.

After confirming that the diode caused the fuse from blowing I've decided to replaced all four diodes since I have a lots in my stocks.
jdvillanueva_25.jpg

Remember that when you installing the new diode on the board, make sure that you will make it in the right polarity.

jdvillanueva_26.jpg

This steps is also applicable in the DVD Player,Flat panel, Projection, LCD TV, you have to disregard only the posistor and degaussing coil.

Have a nice day!
Thanks for using Fixya.

Jdvillanueva

on Mar 02, 2011 | Televison & Video

1 Answer

No picture


It's obvious that the power supply failed. The most common parts in a power supply are a thermistor or a voltage rectifier, possibly even a voltage regulator. diodes or resistors can act as fuses too. A ringing sound can come from a fixed coil that isn't kept still with enough epoxy. Hope this helps.

Nov 26, 2013 | LG 50PS60 50 in. Plasma HDTV

1 Answer

Capacitor r good but the tv wont turn. On


Capacitors rarely go bad. Look for burnt components. I'd suspect you have a bad transistor or diode but don't over look the obvious things like a fuse. The ideal way to trouble shoot this is to get a huntron tracker and an identical board to compare readings. You might be able to get away with a meter with a diode tester if you don't have a huntron tracker. But since you would need an identical board to compare readings you're really better off buying a new board if you could find one.

Jul 04, 2013 | Televison & Video

2 Answers

Tv power comes on but no picture th name Audiovox


There are two places to look for the problems, the backlight inverter board and the power supply. Look at the power supply first since it is easier to get to, look for burnt parts, bad capacitors, etc.
http://en.wikipedia.org/wiki/Capacitor_plague
Please post back what you find.

Dec 01, 2009 | Audiovox FPE3206 32 in. LCD Television

1 Answer

Insignia tv-30 inch ---model is-tvhd30 has burned capacitor-c359--need to know the value in mfd's.


If it is in the power supply better check the rest of them. most should all be the same value so you may be able to get the value for the burnt one from that. good luck

Apr 24, 2009 | Insignia I-LC23Q1 23 in. HD-Ready LCD...

4 Answers

Protron PLTV-3250 fried


remove pwr board--inspect and you will find a heavy current diode which has eatin its solder pad area--if diode checks ok,repair it's connection.Install board and hook back up.Check for shorts in circuit.Cross fingers and plug her up------good luck

Jan 26, 2008 | Protron PLTV3250 32 in. LCD Television

2 Answers

Insignia TVHD30


I, need the exact model no. to see if you can get part for it . need also to know if it uses an external power adapter thanks

Jun 10, 2007 | Insignia I-LC23Q1 23 in. HD-Ready LCD...

Not finding what you are looking for?
Insignia LCDTV26 26 in. Television Logo

233 people viewed this question

Ask a Question

Usually answered in minutes!

Top Insignia Televison & Video Experts

The Knight
The Knight

Level 3 Expert

69845 Answers

Dave Naylor
Dave Naylor

Level 3 Expert

834 Answers

Cindy Wells

Level 3 Expert

4808 Answers

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

Answer questions

Manuals & User Guides

Loading...