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Re: SANYO 32 INCH TV DS31520 INTERMITTENT STARTUP - Standard (CRT) Televisions

No power

Posted on Feb 01, 2008

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Where is the reset button

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Nov 29, 2015 | Sanyo DS31520 31" TV

1 Answer

I have a Sanyo DS31520 31" TV and the picture will come on, but it doesn't fit right in the screen and the sound won't work, how can I fix it??

You will need to replace two capacitors, 160volt 1MF and a160 volt 4.7MF locations c408 and c607. And if the picture is two narrow replace R401 and R407, IC601 [str30130] ,Q402[2sd1880] This will correct picture size..You are off to a good for the sound I don'remember the value or location of the bad resistor..might be located near IC 601..This will give you a good place to start the repairs. I always clean inside a tv with a leaf blower to reduce dust that will be in the way. Be careful..very carefull when working with high voltage.

Oct 16, 2009 | Sanyo DS31520 31" TV

1 Answer

No picture/sound

It is not likely your picture tube especially if the picture was good b4 it went dead.
Read below and decide if you want to tackle the problem yourself if so I’ll help along the way with what info I have. If not contact the nearest repair shop armed with the info below.

A dead set (no picture no sound) can indicate any number of problems – Usually the set is in shutdown or protection mode – this means that the internal circuits have detected a problem with a supply voltage missing, drawing too much current, going over voltage or a short condition.
The first thing to do is power off the set unplug it for 5min. than replug and try again. This in effect resets the main micro and will sometime unlatch a fault and resume working. There are certain common problems based on the make model – for instance convergence output IC’s(CRT projection TV’s) can cause a dead set symptom in many models. Vertical output IC failure can also cause the same symptom (CRT standard and Projection).
The only way to determine the real cause is :
By an educated guess based on experience or by directly troubleshooting the set – checking fuses, measuring voltages and checking for shorts. Many of the intermittent problems such as, int.(Intermittent) no sound or picture, int. picture shrunken or misshaped. These problems are generally due to cold (bad) solder joints (all TV’s and electronics) that break down under slight temperature changes or vibration and are usually verified by physically tapping the suspected area on the circuit board, or by quickly heating or cooling a suspected component or area ( cold spray and hot air gun). The other main culprit is leaky or dried out capacitors or capacitors that change value depending on temperature. These can sometimes be seen as bulged or leaky and have an acrid odour.

Sep 27, 2009 | Sanyo DS31520 31" TV

1 Answer

Lightening came in on the cable, is there a reset or a fuse in the electrical input?

Yes, however the pcb could be fried due to the high voltage, need to have it checked by an approved engineer and contact your insurance company if insured
Never take the back off the tv unless you have safety training, it can still have voltage inside even with the tv turned off

Sep 20, 2009 | Sanyo DS31520 31" TV

1 Answer

My TV won't turn on.

warranty.once you tamper with it,it is void.
besides there is 30000 volts in there and it is dangerous.
the picture tube stores the high voltage,and is there even unplugged

Apr 18, 2009 | Sanyo DS31520 31" TV

1 Answer

32 in sanyo tv

If the TV is less than one year old, I would suggest to call the place where you bought it from and ask them for an authorized repair centre.
The TV should be still covered under manufacturers warranty.

Feb 15, 2008 | Sanyo DS31520 31" TV

1 Answer

Drawing blue lines around body parts

Was the set moved anywhere , to or from any where? explain what byou mean by drawing blue lines??

Mar 18, 2007 | Sanyo DS31520 31" TV

1 Answer

Sanyo DS31520- high pitched whine, picture is fine

sounds like bad solder connections on ground of the inputs radioshack has a cheep solred gun and solder make sure set is unpluged

Dec 03, 2006 | Sanyo DS31520 31" TV

2 Answers

Sanyo DS31520 went dead

If still under warranty or if you have no electronic repair experience you should take the set back to the shop or to a repair person. Some of the solutions described below can be dangerous, TV's are very hazardous to service. Even when plugged out, TV's can store very high voltages. Squealing noise is from the power supply teling you that there is an overload condiction. The overload is shifting the operational frequency of the power supply into upper audio hearing range. Check the diodes and caps in the supply circuit and the active components in the deflection circuit. also resolder the LOPT, h-output, h-driver, and h-driver transformer. Good luck

Jun 19, 2006 | Sanyo DS31520 31" TV

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