Telefunken T32R915FHD - PSU VESTEL 17PW04-1 voltages to low

[nopain77]

Hello everyone,

Can anybody help me ?
All Fuses OK, but Voltages to low.
12V - real 8,3V
24V - first 24V , falling down to approx. 18V if i connecting a multimeter.

- the same failure after disconnecting the T-Con and Inverter Board.
- replaced any caps on the PSU, no changes

pictures follows

Have a multimeter and no tv specific but electronic experience.

by the way: im not a native english speaker , maybe i didnt understand some phrases ...

Thank you

[tom66]

Re: Telefunken T32R915FHD - PSU VESTEL 17PW04-1 voltages to low

Is this an LED-LCD TV?
Common issues with Vestels are bad caps (electrolytics & poly film.)

Clear pictures of your board would be necessary.

[jbfr_54]

Re: Telefunken T32R915FHD - PSU VESTEL 17PW04-1 voltages to low

Bonjour, il faudrait essayer de remplacer C214 (à priori le condensateur gris à côté du transformateur situé près de l'étiquette juste au dessus du radiateur). C'est un 15nF 630 volts MKP. Le schéma de l'alimentation peut être téléchargé chez Electrotanya ().
Tenez moi au courant.
Bonne chance.
Jean

[nopain77]

Re: Telefunken T32R915FHD - PSU VESTEL 17PW04-1 voltages to low

thank you for the tipp , will replace 15nF 630 volts MKP capacitor C214.

[tom66]

Re: Telefunken T32R915FHD - PSU VESTEL 17PW04-1 voltages to low

That is a poly-film cap.
Good luck.

[sabke]

Re: Telefunken T32R915FHD - PSU VESTEL 17PW04-1 voltages to low

Did replacing capacitor C214 solve the problem of your tv?

[ReeceyBurger123]

Re: Telefunken T32R915FHD - PSU VESTEL 17PW04-1 voltages to low

What is the issue with yours ?

[sabke]

Re: Telefunken T32R915FHD - PSU VESTEL 17PW04-1 voltages to low

Hi,

Problem with my tv is, when power up tv backlight turns on but no picture.
After +- 45 min I get a hanging picture, 10 min. later the tv is working normal again. I get 11.9v on the connector from psu to main board. On the T-con fuse I get 11.7v. When i disconnect the T-CON form main board, then i get 12.1v on on the connector from PSU to main board. So i was wondering if the problem is PSU or T-CON? I replaced already some capacitors on PSU but no good resold.

Its a Medion LED tv 4 years old with a VESTEL 17PW04-1 PSU.

Many thanks.

Bas

[thoma]

Re: Telefunken T32R915FHD - PSU VESTEL 17PW04-1 voltages to low

Take a hairdryer and blow to the boards!
Any reaction?
regards thoma!

[ReeceyBurger123]

Re: Telefunken T32R915FHD - PSU VESTEL 17PW04-1 voltages to low

Sounds like an issue with the Lcd display to me. Got an image of the whole backside of the Tv ?

[sabke]

Re: Telefunken T32R915FHD - PSU VESTEL 17PW04-1 voltages to low

I try it already with the hairdryer but nothing is happening. Looks like a bad caps. but not sure. I will try later freezer spray.... Any other suggestion? Do you think the PSU it the problem? cheers....

[sabke]

Re: Telefunken T32R915FHD - PSU VESTEL 17PW04-1 voltages to low

Picture

[sabke]

Re: Telefunken T32R915FHD - PSU VESTEL 17PW04-1 voltages to low

Bye the way I do have sound all the time.

[budm]

Re: Telefunken T32R915FHD - PSU VESTEL 17PW04-1 voltages to low

What DCV do you get at the T-CON fuse when you do not have pictures on the screen and when you do have pictures on the screen?

[sabke]

Re: Telefunken T32R915FHD - PSU VESTEL 17PW04-1 voltages to low

Its stay the same 11.7v no difference.

[sabke]

Re: Telefunken T32R915FHD - PSU VESTEL 17PW04-1 voltages to low

Main board have a cold solder problem. When MB was hot, tv was working fine. So problem solved after re-flowing main board.

Cheers,


Bas

[ReeceyBurger123]

Re: Telefunken T32R915FHD - PSU VESTEL 17PW04-1 voltages to low

Thanks for update.