Question about Toshiba REGZA 42RV530U 42 in. LCD HDTV

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300v ok,i got only 5v standby

300v ok,only 5v output,tv not comming on

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5 volts is usually for the main board that controls everything--but if missing that is your problem---I would check to both sides of the source for a short to ground (output first).

Posted on Dec 08, 2012


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TV cannot turn on

Check and replace the damaged component/s at its main board. Contact any service technician.

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I have a bush tv its got sound but no picture

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.

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TV will not come on even though the light turns blue

check for leak or bad capacitors in the power supply board, then if you can make a voltage checking just to ensure if output voltage in the power supply board are present. the 5v standby 5v switch 12v and 24vdc at the power supply doesn't drop.

Sep 03, 2012 | Televison & Video

1 Answer

When i go to turn my tv on all it does is blink that it is in standby mode. The individual i got it from had a surround sound system hooked up to it and i dont know if they have a remote. They are looking....

The first thing you need to do is to check whether your power supply is working well.
To do this, you need to open the back cover of your tv.
You can immediately reach the power supply. Test the power output using a multitester. There must be an output of 5v,12v, and 24v.
24v is for the screen to lit up.
5v is for the the cpu supply.
12v is for the audio...
You can repair the power supply if it is not functioning or buy a new power supply.
To repair the power supply repace the regulator transistor,the opto isolator, the ic that gives the signal to the opto isolator and check for open resistor near the regulators.

I hope this will help.

Feb 04, 2011 | Sony FD Trinitron WEGA KV-32FS120 32" TV

2 Answers

50 in lg plasma wont turn on just clicks

you have to check the power supply first.

As u mentioned about the click sound, the 5v standby supply is ok. The click sound you hear is from the standby relay.
you have to check the other power supplies in the SMPS (switch mode power supply board) board.
first of all check the standby supply 5v on tne pin of connector P800. check the voltage at this point in standby condition and at the time of power on. it should stay at 5v. if it reduces the you have to check the components related with standby SMPS transformer T501.

If the 5v volt is ok the u have to check the 3.4 v at the pin 1 and 2 of connector P802, at the time of power on. if it is missing then check the components related to T112 ,also check the following voltages at the same power on condition.

19v at Pin 1and 2 of P803
6v at the pin 5 and 6 of P802
12v at the pin 9and 10 of P802

check these to verify your tv's power supply
proper care should be taken while working with power supply, because there is risk of getting electric shock.
if you need any more assistance fell free to contact me through fixya.
I have with me its field service manual ( does not have any schematics) if u need that i will sent it to you, if u give me your email id through fixya.

Jan 18, 2011 | LG 50PC3D 50 in. Plasma Television

2 Answers

No power light and will not come on ,checked all plugs and wall outlets ok

99% of the time this is the power board.
There are way too many guides here on how to get to it and what to look for.

If you don't have the time to dig, replace the whole board:

Bear in mind there is a chance it might not be the power board, though!

I'd test the 5V standby output it should be producing before I order replacement.

Hope this helps!

May 25, 2010 | Protron PLTV-32 Television

1 Answer

Panasonic TX-29ps stdby LED only 2 seconds after switching to the network, everything else is dead. However, Switching PSU IC801 provides voltage to 5V for stdby.

check : H-output tangester / EHT output voltage line 12v /24v 180v check dyiod /capaciter / ragistance ..
if your tv set red led is cantinu on then standby tr.checked if ok then
cheked 5v ragulater ic or prosasor cristl and with canecting pf tr. check pin voltage
if ok
then check EHT output section h-driver transfermor h-puls 2.1v ac
if not then check croma ic input voltage B+ is 8 v dc and canacting spaer.

Oct 19, 2009 | Panasonic TX-29S90X TV

1 Answer

Sony KDF 60WF655 standby/power light blights 10 times then repeat

This is what I found
You may want to have a Tv repair shop look at this .

Standby light flashes 10X

Symptoms / Customer Description
Standby light flashes 10X
[Primary Symptom Code: 2111 ]


G1 and G2 boards are ok.

Found Q box was causing loss of DTL MODULE 5v.
Replaced Q box to resolve.

Part #

Feb 09, 2009 | Sony Grand WEGA KDF-60WF655 60" Rear...

1 Answer

Standby light red

my precission tv model ptv1444 ic lock i dont have the original controll, quetion how cai i unlock the tv, thanks

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