Samsung le40r88bd problem

scott-ayling

VIP Member
VIP Member
Joined
Jun 8, 2005
Messages
1,226
Hopefully someone can help me with the problem I am experiencing. I believe digidude is good with fixing tvs. I had the dreaded tv not starting and clicking noise. So I replaced the burst and swollen caps. Tv still wouldn't turn on so I shorted pin 5 and 6 on EEPROM but couldn't get in service menu a nothing appears on screen. I can now turn tv on and off and no clicking just can get a picture. I also can get sound when hdmi connected but still no picture. Is it my main av bird still power board dodgy or something different.
 

parker13

VIP Member
VIP Member
Joined
Jul 24, 2005
Messages
1,418
Replace the eprom with a blank one and check screen settings, better still take it to your local independent television engineer ;)
 

scott-ayling

VIP Member
VIP Member
Joined
Jun 8, 2005
Messages
1,226
Think I might have to to engineer or just scrap it. Changed tconn board still same, bought a new main board but I thought it was the same but one connector is different
 

chookey

VIP Member
VIP Member
Joined
Oct 6, 2005
Messages
4,093
You've spent too much on it just to scrap it mate.
Parker13 gave you the answer. A common fault on this series of sets is corrupt eeprom following the demise of the caps on the smps board.

Usually fitting a blank one will let the set fire up with picture. It uses an Atmel 24C256BN, the same chip we used to reprogramme on the 8300HD cable boxes.
Just in case you need it I have attached the eeprom dump for your model.
 

Attachments

scott-ayling

VIP Member
VIP Member
Joined
Jun 8, 2005
Messages
1,226
Glad I never gave up , used a heat gun to take of EPROM from the board I bought and put it on my original board and tv fired up, thanks guys for the help
 
Joined
Jan 20, 2013
Messages
1
Hi everybody . Samsung le40r88 , was problems with the power supply, now turn on but no picture, on the remote control not respond. I think fault eeprom
 

tolsen

Member
Joined
Oct 14, 2018
Messages
13
I am also having no start continous clicking cycling with my Samsung LE40R88BD TV. The set had this problem many years ago too and was then repaired under warranty. Have been inside TV and found that two caps were replaced on power board and EEPROM replaced on main board. Have tested ESR on all caps on power board and found them to be good. Voltages are also good. Now considering replacing EEPROM but think I need EEPROM dump file. Can anoyone help with that. I am new member and see I must make five posts before I can download anything from here.

Just tried the EEPROM reset suggested here by soldering in a cable to pins 5 & 6, turn on TV and cut cable after a few seconds. Regrettably no success as TV keeps cycling and clicking like before.

Does a new EEPROM need to be flashed with the appropriate dump file or will a blank EEPROM work without once installed?

Finally having enjoyed a few drams of Lidl Queen Margot whisky, got brave enough to desolder EEPROM and fit a brand new blank one.
 

tolsen

Member
Joined
Oct 14, 2018
Messages
13
With the blank EEPROM I managed to get the TV into service mode and finally got all channels, picture and sound.

The only problem is when I turn TV off I can only get it to work by again entering service mode. The TV does not appear to save its settings.
 

chookey

VIP Member
VIP Member
Joined
Oct 6, 2005
Messages
4,093
You may have it in shop or hotel mode. Download the operating manual.
 

tolsen

Member
Joined
Oct 14, 2018
Messages
13
Thanks for your advice. I never thought of reading the manual as I am male and en engineer.
 

chookey

VIP Member
VIP Member
Joined
Oct 6, 2005
Messages
4,093
Thanks for your advice. I never thought of reading the manual as I am male and en engineer.
Really?? What sort of engineer?? Definitely no tv engineer

Does a new EEPROM need to be flashed with the appropriate dump file or will a blank EEPROM work without once installed?

Finally having enjoyed a few drams of Lidl Queen Margot whisky, got brave enough to desolder EEPROM and fit a brand new blank one.
 

chookey

VIP Member
VIP Member
Joined
Oct 6, 2005
Messages
4,093
A proper engineer not a technician but you are right I am no TV engineer although I have fixed a few TVs in my time.
Yet here you are asking us lowly technicians for advice.

Me: "Really?? What sort of engineer?? "
You: "A proper engineer"

Why is my bullshit warning system still active?
 

tolsen

Member
Joined
Oct 14, 2018
Messages
13
I am neither technician nor engineer when it comes to repairing TVs and electronics but usually pretty good with mechanical things and structures.
 

chookey

VIP Member
VIP Member
Joined
Oct 6, 2005
Messages
4,093
I am neither technician nor engineer when it comes to repairing TVs and electronics but usually pretty good with mechanical things and structures.
I know!! It stood out a mile.You shouldn't have got arsey about the advice I gave you. I've been in the repair trade for over 40 years now, faultfinding is no problem but I always refer to a user manual to set up an old piece of equipment.
Your tv is more than 10 years old and I doubted you still had the manual.

I'll leave you in peace now, welcome to DW. :)
 

tolsen

Member
Joined
Oct 14, 2018
Messages
13
This evening I flashed eeprom with the file kindly provided by Chookey in post #4.
Turned TV on but not behaving. Snow is covering image on screen and impossible to read. Tried service menu but TV does not allow reset. After about ten minutes the TV settled down to normal and everything appears to work. Very much like an old valve set requiring warm up. Any ideas what could be the cause?
 

tolsen

Member
Joined
Oct 14, 2018
Messages
13
As regards the original eeprom I suspect it is fine. I replaced that one with a blank one which is now in the set and flashed with file provided in post #4.

I found I can read, erase and flash the eeprom I removed. Also verified the flash and no reported errors.
 

tolsen

Member
Joined
Oct 14, 2018
Messages
13
Could my problem be bad solder or trace line? Set works when allowed to warm up. Won’t work if started from cold. Intend to heat main logic board with a hair dryer tomorrow if set does not behave. Could then possibly home in on where the problem is located.
 
TEST
Top