Hello,
our fridge and freezer stopped cooling last weekend, it’s a Beko fridge.
looking at the bottom, I can hear the relay clicking on the plug attached to the compressor.
There is also a 3uf capacitor, I’m thinking this is a run capacitor, I tested this with my fluke and and it measured at 1.5uf, so I replaced this (new one tested just over 3uf) so that’s where it should be.
I was thinking this was the issue. The compressor seem to run for like a minute then shutoff again.
inside the relay, there is a Klixon 4tm thermistor,...
Liam.25
Senior Member
Last Activity: 03-23-2024, 12:56 PM
Joined: 02-13-2011
Location: England, uk
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Re: Samsung ps42-b451 plasma - clicking
so I ruled out the logic board and main board by tricking ps_on and vs_on with resistors and the psu still was clicking away.
But further inspection on the psu, I think I've found the culprit. On the underside there is a semi conductor at "pcm801s" with a slight burn mark on.
So I've ordered a replacement.
Anybody seen this fault before?...Last edited by Liam.25; 03-25-2015, 04:03 PM. -
Re: Samsung ps42-b451 plasma - clicking
Power board part number is bn44-00273dLeave a comment:
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Re: Samsung ps42-b451 plasma - clicking
All diodes seem ok.
However if I disconnect the main and the logic board from the psu. Then short ps_on with gnd on the cn801 output to main board, the psu powers on to a point where I have the 15v and some more 5v active on the cn801 to main board output.
Remember this is with all boards disconnected.Leave a comment:
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Re: Samsung ps42-b451 plasma - clicking
All fuses are ok. What tests can I check on the fets?Leave a comment:
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Re: Samsung ps42-b451 plasma - clicking
Both va and vs are the same with both boards disconnectedLeave a comment:
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Re: Samsung ps42-b451 plasma - clicking
I believe they are the correct test points.
Vs is 0.7volts
Vs is 0 voltsLeave a comment:
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Re: Samsung ps42-b451 plasma - clicking
Vs and va are showing 0 volts
Thats if I'm testing in what I'm thinking is the test points situated near the va and vs adjustment potsLast edited by Liam.25; 03-22-2015, 08:51 AM.Leave a comment:
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Re: Samsung ps42-b451 plasma - clicking...Leave a comment:
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Samsung ps42-b451 plasma - clicking
Hi guys
Plasma TV - ps42b451
Psu - bn44-00273d
Just received this plasma TV this morning. I've worked in a few of these before, the fault is that it's not powering up. Clicks 5 times then stops, all caps seem ok, fets 801 and 802 seem ok.
Does exactly the same with y-sus and z-sus disconnected.
Cn801 connection to main board-
Ps_on is at 3.3v
Std5v is at 5.2v
No other voltages because psu won't power on.
Cn802 connection to logic board -
Vs_on at 0v jumping to 3.3 whilst trying to turn... -
Re: Samsung ps42a457 showing bad image
Anybody??Leave a comment:
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Re: Samsung ps42a457 showing bad image
No x and y connected
Vs205 va54
Just with x
Vs154 va43
Just with y
Vs146 va41
With x and y
Vs140 va39Leave a comment:
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Samsung ps42a457 showing bad image
First check
Vs should be 205, it's at 150
Va should be 54 it's at 41
Unplug x main and y main
All voltages are perfect out of psu
If I plug either boards in, I get the above incorrect voltage
Usually only 1 board has caused this
Does it mean x and y main are both bad?? -
Re: Samsung ps42a457 plasma tv (blue tint fault)
Ok I have done this couple of times before on a ps42q96
But I cannot find the EEPROM on this board
Can you see it...Last edited by Liam.25; 11-05-2013, 05:01 PM.Leave a comment:
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Re: Samsung ps42a457 plasma tv (blue tint fault)
YesLeave a comment:
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Re: Samsung ps42a457 plasma tv (blue tint fault)
Hi tom, I tried this today
Got into service menu but couldn't select anything, nothing happens, everything's unresponsive.
But all ok to turn off with standby buttonLeave a comment:
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Re: Samsung ps42a457 plasma tv (blue tint fault)
[URL="http://www.youtube.com/watch?v=Sov3mtDsW94&feature=youtube_gdata_player"]http://www.youtube.com/watch?v=Sov3mtDsW94&feature=youtube_gdata_player[/URL]
Here's the original fault, screens either got a blue it red tint to it depending on which picture mode I choose.
Also I get no on screen menus or input images on any other input
Only DTVRe: Samsung ps42a457 plasma tv (blue tint fault)
[URL="http://www.youtube.com/watch?v=Sov3mtDsW94&feature=youtube_gdata_player"]http://www.youtube.com/watch?v=Sov3mtDsW94&feature=youtube_gdata_player[/URL]Leave a comment:
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Re: Samsung ps42a457 plasma tv (blue tint fault)
Well I think it's the main board causing my problems
On the test, reds blues and greens all look fine to me.
See what you think
[URL="http://www.youtube.com/watch?v=lz474UfFvBo"]http://www.youtube.com/watch?v=lz474UfFvBo[/URL]Re: Samsung ps42a457 plasma tv (blue tint fault)
Well I think it's the main board causing my problems
On the test, reds blues and greens all look fine to me.
See what you think
[URL="http:/Leave a comment:
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Re: Samsung ps42a457 plasma tv (blue tint fault)
Is this the 4 pin connector?...Leave a comment:
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Re: Samsung ps42a457 plasma tv (blue tint fault)
Thanks tom
I will try that and come back.
Once the pins are shorted, how do I know if it's faulty or working?Leave a comment:
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