Olevia 537-B11

[mmilhomme]

Hey Guys, this is my first thread. If i posted it in the wrong place or it's already been answered, I apologize.

I have an Olevia 537-b11. It has a blue power light but no picture. I haven't noticed any flashing.

I checked Power Board for Caps, all are fine.

I've seen many threads about this exact problem, but no one had an answer. Could it be something as simple as a surface fuse?

[netdent]

Re: Olevia 537-B11

I have exact same problem, when you plug it in do you see any red leds briefly light on main board?

[mmilhomme]

Re: Olevia 537-B11

Yes I do! They stay on though.

I have read elsewhere that it could be a faulty IC Switcher.

Can anyone help me locate and test mine? (board, description, ohms or voltage?)

I can post pictures if that would be helpful.

[netdent]

Re: Olevia 537-B11

Yes I do! They stay on though.

I have read elsewhere that it could be a faulty IC Switcher.

Can anyone help me locate and test mine? (board, description, ohms or voltage?)

I can post pictures if that would be helpful.

Is it not just your backlights that are not working? shine a torch on screen see if you can see menu etc

[mmilhomme]

Re: Olevia 537-B11

Shined a light on it. No luck.

I believe the blue light indicates it has power, but is off. It never powers on.

[selldoor]

Re: Olevia 537-B11

hi - Please post pictures of the back of the set with the boards roughly in place if you have them out already. Then also pictures of the front and back of your boards.
Post them with "manage attachments" found by scrolling down on the "Go Advanced"
Pics should be without flash if possible and the part numbers should be readable on the boards.
Please update your profile with where you live and it is useful if you can give some idea of your electronic and soldering skills and details of your tools , meter, soldering iron etc.

[mmilhomme]

Re: Olevia 537-B11

First thanks selldoor and netdent for your replies!

A friend of mine passed away, he was a TV technician, I inherited his tools. I included a pic of some of the gear I have.

I am a novice for sure. I've replaced Caps on power boards and i've soldered pico fuses over surfaces fuses on inverter/ T-Conn boards.

I've taken some pictures, but I was in a bit of a rush, so I apologize for quality or lack of reason to them. I will take more!

I am happy to update my profile ASAP

again, thank you very much for helping me!

....Uploading Pics Issues. As a quick fix i posted them at Flickr

http://www.flickr.com/photos/76914321@N03/?saved=1

[rpgruss]

Re: Olevia 537-B11

I have the 'little brother' to this TV, a 337-B11. For some reason Olevia decided that the power light would mean the opposite of what everyone else does. A light means the TV is off. To me it suggests that your power supply is bad, or the main board is not working. If you turn on the power supply with a resistor do you get 12V and 24V?

[netdent]

Re: Olevia 537-B11

I have the 'little brother' to this TV, a 337-B11. For some reason Olevia decided that the power light would mean the opposite of what everyone else does. A light means the TV is off. To me it suggests that your power supply is bad, or the main board is not working. If you turn on the power supply with a resistor do you get 12V and 24V?

How do you turn on the psu with a resistor? as there are no markings for ps_on etc

thanks Ronnie

[PlainBill]

Re: Olevia 537-B11

How do you turn on the psu with a resistor? as there are no markings for ps_on etc

thanks Ronnie

Logically. By examination of the connectors to the main board one can identify power pins, ground pins, and status and control pins.

I understand Scotsmen have a reputation for fiscal responsibility to maintain. I wish there were more people with that attitude. However when I see someone with over 100 posts who STILL hasn't gotten the message that pictures help us help you, I'm inclined to either vent or ignore.

PlainBill

[netdent]

Re: Olevia 537-B11

Logically. By examination of the connectors to the main board one can identify power pins, ground pins, and status and control pins.

I understand Scotsmen have a reputation for fiscal responsibility to maintain. I wish there were more people with that attitude. However when I see someone with over 100 posts who STILL hasn't gotten the message that pictures help us help you, I'm inclined to either vent or ignore.

PlainBill

Well PlainBill this is not my post! pictures were added to my post which I bumped the other day, just I got no response to mine

thanks Ronnie

[mmilhomme]

Re: Olevia 537-B11

I have the 'little brother' to this TV, a 337-B11. For some reason Olevia decided that the power light would mean the opposite of what everyone else does. A light means the TV is off. To me it suggests that your power supply is bad, or the main board is not working. If you turn on the power supply with a resistor do you get 12V and 24V?

Sorry for the slow reply! Unfortunately, i'm not certain how do what you asked. I have a multimeter, if that can be used.

I have continued doing as much googling as humanly possible. No one has sorted this problem out.

I tried adding 5V parallel into the 5V standby- a solution I found via flickr, but nothing!

I did find this thread interesting

http://www.riddledtv.com/forums/olev...ght-t1832.html

Symptoms seem same as mine. No solution discovered, but someone mentioned a chip lifting off the main board. Does this sound appropriate? Is it fixable?

Thanks guys!

[Mad_Professor]

Re: Olevia 537-B11

are you sure it can turn on? blue means stand-by and off means the TV is ON!

Try the remote it may be a bad switch. I have the 42" and my mainboard bit the dust awhile back spent the 100$ on a new one off ebay and it's working fine to this day.

If that doesn't work then do what plainbill says, check for voltages, if no then you'll have to check the on/off wire on the PSU for the 5v return. This is crucial as this triggers the primary to switch on, which powers up the mainboard, tcon and inverters.

I suggest some sewing pins and alligator clips to tap into the headers of the wiring harness and connect them to multimeter. Be sure to keep them apart so they don't short or you'll have a bigger problem. Now plug the unit in, press power button and see if you're getting anything on the multimeter. Then from there we can determine if it's the mainboard that's having the issue or the power-supply and/or inverters.

I've heard rumors that T-con can control power-up if there is a fault condition in the back-lighting system. Unplug T-con and see if the unit will power up.