Samsung 2233RZ "2s to blanck"

[selldoor]

Re: Samsung 2233RZ "2s to blanck"

ok but which pins - I am concerned that my original pic showing the secondaries was only an example and is not the same as yours.
The later picture only showed the primaries which Are in the same position

BUT the secondaries on YOURS are probably as attached.

Were those the pins you measured?

[jays_swe]

Re: Samsung 2233RZ "2s to blanck"

p1-p2 0.02
s1-s2 920
s3-s4 883

[selldoor]

Re: Samsung 2233RZ "2s to blanck"

Merry Christmas

Yes that ismore like what I was expecting.
It still looks as though it is bad - the S1>S2 and S3>S4 should be within 3%

[jays_swe]

Re: Samsung 2233RZ "2s to blanck"

Happy I found the problem!

[budm]

Re: Samsung 2233RZ "2s to blanck"

"Happy I found the problem!" ??

[jays_swe]

Re: Samsung 2233RZ "2s to blanck"

Yes happy I know the problem.

[jays_swe]

Re: Samsung 2233RZ "2s to blanck"

Change the inverter and works fine now Thanks guys!

[selldoor]

Re: Samsung 2233RZ "2s to blanck"

Well Done! - thanks for reporting back.

[dtox]

Re: Samsung 2233RZ "2s to blanck"

Hi All
I got the same problem and i need a new part but i noticed a dead give away that the transformer is to blame, if you get excessive discolouration on the pcb around the connections of the primary coil (also near the jumper wires), its a good guess that the transformer is to blame.
The component on the back with the missing leg is a dual FET which tells me this is a resonance circuit. I noticed all the messages regarding what the coils resistance is but nothing on what it should be so i checked with some people and found that:
1: both secondaries should have about the same resistance
2: the secondary coils should have a resistance of around 1000 ohms
Could anyone confirm this with a working or new coil?

thanks

BazzUK

I had the same problem as the OP and replaced the inverter. But still get the same error. So there's a capacitor somewhere on my PSU board that's messing things up and I don't have a multimeter to seek out where things are going wrong.

[Lumberjack777]

Re: Samsung 2233RZ "2s to blanck"

Change the inverter? The inverter circuitry? The inverter board? How do you change an inverter?????

OH! I guess he meant the inverter transformer!?!?

[Ion Ripper]

Re: Samsung 2233RZ "2s to blanck"

Hello, I just wanted to say "thank you" for this thread. My 2233RZ has the same problem and I found this too via google. I already replaced the capacitors by trial, even if measuring them showed that they are still okay, nothing changed.

I ordered a new inverter now and will report back if this works. thanks a lot for your efforts so far.

[gtredx69]

Re: Samsung 2233RZ "2s to blanck"

Folks,

Having the same 2 second problem, I don't have much experience with electronics but willing to give it a go. I have added pictures of both boards but I think I found the problem. Have a look see please and let me know.
Help be appreciated.


Is this the problem LM22










Just realized that post might be quite long with the photos if there's a better way to display let me know.

Many thanks
Gareth

[gtredx69]

Re: Samsung 2233RZ "2s to blanck"

Any help on this one please.

[budm]

Re: Samsung 2233RZ "2s to blanck"

Please edit your post so the picyres are not post in line, please use attachment function to upload the pictures.
Take good clear pictures of the bottom side of the power supply/inverter board so I can point out the test point of the high voltage windings of the inverter transformer. We need to find out if they are OK or not.
Or read the post from the beginning since we have already gone through the process of how to test the inverter transformer.

[Ion Ripper]

Re: Samsung 2233RZ "2s to blanck"

Replaced the TM-0915 yesterday, that solved my "2s to blanck" problem too Thanks a lot

[gtredx69]

Re: Samsung 2233RZ "2s to blanck"

Thanks for the reply folks, I can't seem to edit the post anywhere theirs no option or I am blind.

I assumed my problem was in this pic, but I will upload the power board tomorrow and go through this topic again.

[Tomcatciller]

Re: Samsung 2233RZ "2s to blanck"

Hello guys,

today a broken 2233RZ arrived. He has "2s to blanck" behaviour.

I just disassemble it and now I want to measure it. My first impression is, that the monitor smells a little bit like cigarette smoke. But it is not too bad, you notice it.

My next impression was that I can see no bad capacitor on the board.

So I want to take some measurements of the inverter transformer in circuit.

I added picture of the back of my circuit and my markings.

manual range multimeter, set it to 2000 ohms

P2-1 <-> P2-2 = 001 ohms
P3-1 <-> P3-2 = 001 ohms
P2 <-> P3 = 001 ohms
P1 <-> P2 = 1 (no contact)
P3 <-> P4 = 1 (no contact)
S1 <-> S2 = 898 ohms
S2 <-> S3 = 1 (no contact)
S3 <-> S4 = 963 ohms
S1 <-> S4 = 1 (no contact)

Does these measurement indicate any circuit failure?

Greets from Germany

TCC

[Rtech]

Re: Samsung 2233RZ "2s to blanck"

Replace the transformer, looks like the secodary comparison is outside the 3-5% ,and therefore should be changed.

[Tomcatciller]

Re: Samsung 2233RZ "2s to blanck"

Ok, thx for the replay. I just searched for a TM-0915 Inverter and found this one on German e bay.

TM-0915 Inverter

The problem is, the seller sais, his inverter has 8 connectors. We know the TM-0915 we need has 10 pins. So I doubt it is the right one. I just write the seller some questions to this parts, waiting on his answers.

Second thing is the part number. All original and replaced TM-0915 Inverters I saw on this thread had the labeling TM-0915 "TNE 1029 D T".
But mine has the label TM-0915 "TNE 1029 B T".

Is this important or just a revision character? Found no infos on google.

Greetings from Germany

TCC

[Rtech]

Re: Samsung 2233RZ "2s to blanck"

If you look at the pins you will note that P2-1 and Pin2-2 are common,,,similarly P3-1 and P3-2 are common, so that accounts for the two extra pins !!!!!!!