SHARP 32JF - 74H problem. HELP

[9000]

Hi all, I'm new here, so not sure if this is the right place to submit this panic. I need to find help from someone who knows all about TV's.

The TV in question is a SHARP 32JF-74H. The dogs :cen: when I bought her in 2002. Full HD 1080i in 2002 was something.
OK she is 8 years old, but still a good TV, although not at the moment, as she does not work. I just cannot afford a new one just yet, But have seen a Tosh. 32" in ARGOS for £245, which I think I'll be saving up for.

The problem.
With the mains plug in. Turn on TV and the LED flashes RED, turns GREEN, turns RED (all in a matter of 1 second) then out and TV is DEAD, nothing. If you try again, nothing happens. However, wait for 5 or so minutes and plug back into mains and the loop starts again - LED flashes RED, turns GREEN, turns RED (all in a matter of 1 second) then out and TV is DEAD.

I have taken off the back cover, and downloaded the - Service_Manual_Sharp_32jf_74h_Color_Tv.pdf. Cleaned out as much dust (Cover never been of in the 8 years we have had her. So 8 years of dust from 5 houses) as I could without disturbing anything other than dust.
Check the main 3.1A fuse, that's OK, had a good look around, can see nothing that would suggest a fault. I have removed the only - IC 1002 CH-IX1841CJHD EPROM SET 4M 3V FLASH 32JF74H S AY - With this out, The LED stays RED, if that's of any help. This is now back in place.
So, that's as much as I can tell you.
Anybody got any ideas on what is causing the TV not to work. What I need to know is...is she BER?
If anybody wants to view the service Manual, its 6.25Mb - 63 Page PDF. Let me know and I will upload to my server for you to download. I will email you the address.
thanks for reading.
Andy

 

[ChrisFrost]

The LEDs flashing could be an error code. If you have the service manual and this TV does self diagnose then it should describe the various error codes.

 

[9000]

Error codes.
LED FLASHING CODES
If the TV set does not work and the power indicator is flashing, follow the sequence according to the information below, as
a guide to fault finding.
1. Unable to read or write into NVM: 66% ON, 33% OFF twice and OFF for a second.
2. MSP failure: 66% ON, 33% OFF for three times and OFF for a second.
3. VCT failure: 66% ON, 33% OFF for four times and OFF for a second.


Trouble is, LEDs do not flash, just a very quick on and off for red, gree, red off

 

[ChrisFrost]

Could be the same as some other flat panel TVs... dead or dying large capacitor in the power supply. Don't ask me which one or where; it's just a common fault.

The test is to use a hair dryer to heat the caps to see if the TV fires up. Caps respond positively to heat. Silicon responds to cold.

 

[9000]

Thanks Chris, I'll see if I can work something out on that front. I have a hair drier ;-0

 

[SHELDONSTV]

first things to check is the ht supply....with the line op stage disconnected,load the ht supply with a 40w lamp and switch on-if you have correct ht and all other supplies are present the line stage needs checking.
problem may be faulty lopt-the set will be giving a couple of secs line drive before shut down with an error code or a fault with the line op transistor-could be sc which could be due to poor soldered joints-flyback tuning etc
these sets do also suffer from poor line drive which will destroy the line op transistor a short time after switch on-theres a repair kit for this-do replace the nvm before switch on