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Samsung LE40R88BD Clicking Relay
daz:
there is always another option, if you haven’t got a clue about electronics, instead of guessing at the fault and risking writing off your set, you could always take it to your local TV repair shop many of which have decades of experience, as supporting your local TV engineer (the few of us that are left) will stop us all going bust, taking up drink (well more drink than usual) and starving to death.
Just a thought
Daz
ahh that felt better, off down pub
AdyAde:
--- Quote from: daz on December 04, 2009,04:26:02 ---there is always another option, if you haven’t got a clue about electronics, instead of guessing at the fault and risking writing off your set, you could always take it to your local TV repair shop many of which have decades of experience, as supporting your local TV engineer (the few of us that are left) will stop us all going bust, taking up drink (well more drink than usual) and starving to death.
Just a thought
Daz
ahh that felt better, off down pub
--- End quote ---
Quite simply because there aren't any local repair shops in my immediate area, the nearest is 22 miles away, and when asked how much they said £65 just to take the back off !
The TV isn't 1080 so isn't worth an awful lot anyway.
ThePrawn:
Hi all
I have one on the bench at the moment. The usual caps in psu problem. But I can't get it to restart to reset the eeprom settings. I'm guessing that shorting sda and sclk pins doesn't really reset these tvs or there is another fault causing it to trip off.
Does anyone have a hex dump, the nearest I got so far is a le32r72 which is an older chassis, so I want be using that. I try reading it and rest it to 0xff next week and see if that helps.
--- Quote ---Quite simply because there aren't any local repair shops in my immediate area, the nearest is 22 miles away, and when asked how much they said £65 just to take the back off !
--- End quote ---
AdyAde I'm surprised that there aren't any closer as your in Middlesex.
If you want us to have a look, I'm probably only 10 miles away (Egham) and we don't charge to take the back off, just ask how much we can charge before needing to give you a call or quote (saves us taking the back off twice). Maybe we should charge as people do abuse it, costing us money and time? We are a bit part time these days, we have to make a living elsewhere, but we are still kicking. Maybe I should join Daz for a drink :brinda:
Sean
sparky:
try this it does work
sparky
Re: Samsung LE40R87BD LCD TV - relay clicking repeatedly but wont start
« Reply #4 on: April 25, 2009,06:16:08 » Quote
--------------------------------------------------------------------------------
Hi John and RB
Set now up and running. It was a case of a corrupted eeprom. Thanks John for the info.
For anyone with the same problem the procedure is as follows.
On this model the eeprom in question is IC 1803 (24C256) 8 pin smd and is located on the underside of the main board near the common interface. The clock and data pins are pins 5 and 6 and are identifiable by the 100 ohm smd resistors connected to each of them. Fit a shorting link (on long wires) between the pins. Reassemble the chassis. Switch on and then remove the short. Bring the set out of standby. Now access the service mode as follows-
Using the remote control, switch to standby, press info, menu, mute and power. The set should start and display the service menu. Using scroll keys select item 8 and enter by scrolling right. Select "tuner" and set to auto. Revert to previous screen by pressing menu. Now scroll to "reset" and enter by scrolling right. The set will revert to standby. Power back on and tune in stations. Thanks again tv john for the information.
John.
« Last Edit: April 25, 2009,09:41:35 by Contrast John
ThePrawn:
Thanks Sparky for info.
I did try all that before posting. I used a length of cable to short pin 5-6 at start up. I tried all sorts of timings, with no luck (several hours later). :wallbash: So I guess shorting pins is not 100%
I read the eeprom today and then reset it to 0xff that worked. The system reloaded it with I guess the factory defaults for this model. I then reset via service mode, the tuner was already on auto. I had to half remove the ic to rewrite it as the system held the Write Protect High, disabling any writes :lamo:
I've attached the eeprom dumps for the non-working and working eeproms. The working one should be tuned in and setup for London tv channels.
A note of warning to any DIY person, this particular TV has an extremely dangerous power supply as it supplies the back lights with 1.5KV at 72mA. :diablo: The hazard isn't that obvious(only a couple of small warning HV stickers) and this is the first LCD I've seen with one, normally they us 12V or 24V and use the inverter transformers to up the voltage to the CCL.
Sean
IC803 working dump for Samsung LE40R88BD is le40r88_wk.e2p
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