Question about RCA 27F530T 27" TV

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No picture no sound

This is my daughter's set and I have not looked at it.
I assume it may be a power supply failure and was looking for a schematic and parts list to determine if the power supply is a replaceable module or distributed within a larger circuit board.

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Replace the cpu of your mainboard and check the out put voltage of your dc power.

Posted on Jun 11, 2008

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I am having problems with our daughter's tv. The volume isnt working now even though the picture is fine?


Have you looked at the headphone jack? Sometimes a set is left plugged in and sound wil not come out of speakers.

Also, look at cable box. It can sometimes have a separate volume control.

last, if you plug in a set of headphones and you hear sound, pick up a pair of inexpensive powered speakers and use those.

Jul 10, 2014 | Bush 5693D 24" TV

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Tv keeps turning itself off and the white in the picture looks alittle off.


To get the right colors, especially a plain white, requires the right mix of red, green and blue from the picture tube. Sony TV sets have a circuit called AKB that automatically keeps the picture tube balanced by adjusting the signals to it. If that balance can't be achieved it shuts off the picture. This may due to tube aging so one of the color guns is too weak to adjust, or failure of parts in the AKB circuit itself. If the sound stays on and the power light starts blinking when the picture goes off, this is likely why.

On the other hand, if the set is turning off completely with no picture, sound or power light, the set may have power supply problems or defective parts in the picture tube high voltage circuits.

Since there are several possible causes, this set needs to be checked by a technician who can diagnose the problem and decide what needs to be done. It's not a simple thing I can point to and say "change this part". If the picture tube is the cause, it's better to replace the set. Otherwise get an estimate, then decide whether to fix or replace.

Apr 04, 2010 | Sony FD Trinitron WEGA KV-36HS20 36" TV

1 Answer

AV-27BM5 relays click on but no picture,high voltage or sound


It's been my experience that symptoms that point to the power supply, generally are not the case. Schematics now days are tough to find unless you are an authorized servicer for that brand. There are a couple of generic dealers out there but they don't carry everything. Before you replace the power supply I would suggest you go though other boards first looking for bad solder connections and/or transistors and IC's that may be defective. A good DVM with an ohm's scale should suffice. If you still can't find anything, I would suggest taking it to a reputable repair person.

Feb 25, 2010 | JVC Standard (CRT) Televisions

1 Answer

Sony kv-35s42 35" tv picture blinks off and on


my best advice would be to check power supply for faults, bad capcitors etc to r/o the possiabilies of a power failure.

Thanks

Jun 26, 2009 | Sony KV-35S42 35" TV

1 Answer

No picture


This can be a scan amplifier failure, failure in the high side of the main power supply, the picture tube may no longer be having emission, or the heater supply to the picture tube may not be working. There are many parts inside the set that can cause failures.

You will have to take the set in for proper shop service by an experienced TV tech.

Jerry G.

Jun 27, 2008 | Sony KV-36XBR450 36" TV

1 Answer

Hitachi tv


Your question is very vague. The reason is that there are many components in a TV set that can cause no sound or picture.

The main thing that is in common is the main power supply. In your set, a failure of the horizontal scan amplifier will also cause no picture or sound, because its secondary side supplies power for most of the TV's operation.

Jerry G.

Jan 04, 2008 | Sony FD Trinitron WEGA KV-36XBR800 36" TV

1 Answer

Color flickers off and on


Most of the time TV problems arise by power supply noise. This noise in the supply is usually caused by Electrolytic Capacitor failure. If you are technical, you can get the schematic and look for the voltage regulator circuits. Measure the voltages with a DVM using both the DC and AC settings. If the DC setting is lower than normal, you will probably see about .5 to 1v of AC voltage on the line. Look for the large capacitor in the regulator circuit and replace them. Cost about  $.50 each. Get new caps with slightly higher voltage rating (if they will physically fit).

Good Luck

Oct 16, 2007 | Mitsubishi VS-45609 TV

2 Answers

Have sound but no picture


solder alot of connections on power supply board and in deflection/ High voltage section on deflection board.

Jul 07, 2007 | Mitsubishi VS-4544 45" TV

3 Answers

Samsung TXJ2567 long wait for picture


That is usually indicative of a weak picture Tube. If the set is over 8 years old, I would consider replacing it. Otherwise, a repair shop may be able to restore the picture for awhile longer.

Dec 19, 2006 | Samsung TXJ2567 TV

1 Answer

Sony 27" XBR failure


I will suggest dont ise it until someone who is qualified comes over to give you an estimate,I belive you have a lot of loose conections in the horizontal driver and output circuits,power supply and crt board.Should not be expensive to repair right now. Good luck.

Sep 18, 2006 | Sony KV-27V42 27" TV

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