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Equipment Repairs => LCD TV forum => Topic started by: evan on January 07, 2008,14:58:54

Title: Philips 30pf9975 (Chassis FTL13EAA)
Post by: evan on January 07, 2008,14:58:54

Hello,
I have a Philips LCD TV 30PF9975/12 that will not start up and there is no audio or vision.

The symptoms are when I turn it on the LED light on the front is yellow and a click is from the relay on main power board, after about 5 seconds another click from the relay and LED changes to red and flashes continuously about twice a second
there is 400V DC at output between relay on and off, auxilliry power board is not
giving 12 & 24 V

I think it's stuck in protected mode, for some reason preventing it from starting up

the led flashes at a different rate when the remote is used but nothing can be done with it.

any help appreciated, anybody got a service manual?

Regards
Evan.

Title: Re: Philips 30pf9975 (Chassis FTL13EAA)
Post by: Vladimir H on January 07, 2008,16:24:40

 ;D

Title: Re: Philips 30pf9975 (Chassis FTL13EAA)
Post by: Vladimir H on January 07, 2008,16:41:51

 ;D

Title: Re: Philips 30pf9975 (Chassis FTL13EAA)
Post by: Vladimir H on January 07, 2008,16:50:13

The upload folder is full. Please try a smaller file and/or contact an administrator.

Title: Re: Philips 30pf9975 (Chassis FTL13EAA)
Post by: evan on January 10, 2008,15:28:27

thanks for trying to upload manual vladimir, i mangaed to downlaod a full pdf version from this site, and managed to extract the error code 5 using a key sequence with the remote, it indicates a problem with the 8V supply not being detected which is making it stuck in protedted mode. I have checked out the main and auxiliray power supplys and they seem ok to me, any Tv techs got specific experiance with this chassis?

thanks in advance

Title: Re: Philips 30pf9975 (Chassis FTL13EAA)
Post by: Vladimir H on January 19, 2008,15:50:09

 ;D

Title: Re: Philips 30pf9975 (Chassis FTL13EAA)
Post by: nicam49 on July 17, 2024,16:26:23

Hi, not sure if this is same fault, but for anyone searching this model, if you warm up the  back of the TV near the top and it starts up ok,  then there's a stock fault  that is fixed by changing the value of a resistor on the PSU board. Don't have details at hand, but will try to dig them out if you pm me.

Title: Re: Philips 30pf9975 (Chassis FTL13EAA)
Post by: downunder on July 17, 2024,23:23:31

HI Evan,
Your symptoms indicate that the OTC-supply may be coming on faster than the FBX-supply. At switch-on, the OTC is initialised along with all it's IC2 address to see which components are present. If the FBX is not present at this point due to a slow start, the OTC concludes there is no FBX and sends the set into protect.

A Philips service bulletin suggest the following mod:
On Aux power supply, replace positions 3031 and 3032 with a 27K 5W resistor. So you remove 3031 and 3032 and place this new resistor on posn
3028.
Replace 2002 with a 330u 25V elco and 2003 with a 680u 25V elco. Hope that helps,  Bruce