Author Topic: Philips LED TV 40PFL5507, no back light. (Read 6577 times)

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.

Mulja tv repair portal · « **on:** October 19, 2013,13:10:27 »

clark97 · « **Reply #1 on:** October 19, 2013,14:36:16 »

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

P.R.Gore · « **Reply #2 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.

Mulja tv repair portal · « **Reply #2 on:** October 25, 2013,01:15:58 »

watteau · « **Reply #3 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.

P.R.Gore · « **Reply #4 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.

watteau · « **Reply #5 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

Mulja tv repair portal · « **Reply #5 on:** October 26, 2013,04:31:10 »

jordan · « **Reply #6 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

P.R.Gore · « **Reply #7 on:** October 27, 2013,12:13:35 »

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

Mulja tv repair portal · « **Reply #7 on:** October 27, 2013,12:13:35 »

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