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Equipment Repairs => LCD TV forum => Topic started by: P.R.Gore on October 19, 2013,13:10:27

Title: Philips LED TV 40PFL5507, no back light.
Post by: P.R.Gore on October 19, 2013,13:10:27

 IN Philips LED TV Model No 40PFL5507H/12 , fault is no back light. So no display on panel, sound is OK. Supply to back light is not generated, this section is included in power supply board. IC no 27CSZ5T is used to produce PWM pulses to drive FETs that generate supply to  back light LEDs.
 Can anybody help? Please upload service manual of this model. :sign0085:

Title: Re: Philips LED TV 40PFL5507, no back light.
Post by: clark97 on October 19, 2013,14:36:16

If its the set I'm thinking of its always one of the two inverter transformers.

Title: Re: Philips LED TV 40PFL5507, no back light.
Post by: P.R.Gore on October 25, 2013,01:15:58

Dear Clark97,
 In order to clarify more, attached two photographs. Can you tell me which TX could have become faulty? I have checked on CRO that INV IC is not outputting driving pulses to driver transformer in spite of INV ON & DIMMER voltages are present.

Title: Re: Philips LED TV 40PFL5507, no back light.
Post by: watteau on October 25, 2013,04:02:13

Hi,
Here's a link to a manual, good luck.
http://www.megafileupload.com/en/file/463946/40PFL5507H-12--pdf.html
Regards.

Title: Re: Philips LED TV 40PFL5507, no back light.
Post by: P.R.Gore on October 26, 2013,00:34:21

Hi watteau,
  Thanks for your reply. Access to above link is not possible. It shows "site is offline & error 522". If you are able to access that link, please attach the manual here.
 Regards,
P R Gore.

Title: Re: Philips LED TV 40PFL5507, no back light.
Post by: watteau on October 26, 2013,04:31:10

Hi,
Sorry, I tried to upload, but the file size is too big (35Mb).

Try this:
http://www.scribd.com/doc/178909518/40PFL5507H-12-pdf

Regards

Title: Re: Philips LED TV 40PFL5507, no back light.
Post by: jordan on October 26, 2013,04:38:39

http://elektrotanya.com/philips_chassis_q552.4ela_46pfl5507t_5500-series_smart_led_tv_3d_312278519222.pdf/download.html

Title: Re: Philips LED TV 40PFL5507, no back light.
Post by: P.R.Gore on October 27, 2013,12:13:35

Hi watteau & jordan,
 Thank you very much for your kind help.
 P R Gore.