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Search: Posts Made By: katinkapicinyke
Forum: Troubleshooting TVs and Video Sources 05-05-2020, 07:21 AM
Replies: 28
Views: 1,953
Posted By katinkapicinyke
Re: problem with psu in Samsung 32"

Reporting back here chaps, issue fixed with replacing KSD526-Y with a BD243B NPN transistor, the PSU is back in business! :)

All your efforts are greatly appreciated, thank you once again!
Forum: Troubleshooting TVs and Video Sources 04-30-2020, 09:58 AM
Replies: 28
Views: 1,953
Posted By katinkapicinyke
Re: problem with psu in Samsung 32"

Thank you, yes, it is a metal backed To-220 as far as I can tell with no heatsink attached (KSD526-D).
Forum: Troubleshooting TVs and Video Sources 04-30-2020, 08:05 AM
Replies: 28
Views: 1,953
Posted By katinkapicinyke
Re: problem with psu in Samsung 32"

Understood, thank you.

I've found a BD243B (NPN), would that be sufficient please?
Forum: Troubleshooting TVs and Video Sources 03-30-2020, 07:36 PM
Replies: 28
Views: 1,953
Posted By katinkapicinyke
Re: problem with psu in Samsung 32"

One of those moments in life, when one only has a PNP in hand...
I found a TIP117 in my box of spares, could I just use that instead?
Forum: Troubleshooting TVs and Video Sources 03-30-2020, 02:33 PM
Replies: 28
Views: 1,953
Posted By katinkapicinyke
Re: problem with psu in Samsung 32"

Thank you! Both de-soldered and checked, appeared to be working correctly.
Forum: Troubleshooting TVs and Video Sources 03-30-2020, 02:32 PM
Replies: 28
Views: 1,953
Posted By katinkapicinyke
Re: problem with psu in Samsung 32"

Thank you, I can see no short on CP811, CP805 (took me some time to find, little SMD bugger!), neither on CP805, CM807, nor on CM814.

The resistance between the two legs of CP811 is around 4.5K...
Forum: Troubleshooting TVs and Video Sources 03-30-2020, 10:34 AM
Replies: 28
Views: 1,953
Posted By katinkapicinyke
Re: problem with psu in Samsung 32"

Thank you, just did that but appears to me the same outcome when measuring that elco capacitor.
Forum: Troubleshooting TVs and Video Sources 03-30-2020, 10:34 AM
Replies: 28
Views: 1,953
Posted By katinkapicinyke
Re: problem with psu in Samsung 32"

Also, thank you for your suggestion, I read the below but found them inconclusive in my case, almost appeared to me as SMPS fault on mine with no obvious symptom....
Forum: Troubleshooting TVs and Video Sources 03-30-2020, 10:30 AM
Replies: 28
Views: 1,953
Posted By katinkapicinyke
Re: problem with psu in Samsung 32"

One more thing please, with the mainboard, TCON and inverter connected I get 3.3V of SB constantly (would I be correct assuming logical HIGH sent back from the mainboard?) while powered up, it drops...
Forum: Troubleshooting TVs and Video Sources 03-30-2020, 10:10 AM
Replies: 28
Views: 1,953
Posted By katinkapicinyke
Re: problem with psu in Samsung 32"

First of all, thank you for all the above suggestions, much appreciated.

I've got a 1k resistor installed between SB and PS pins on CNM802, still no output on 12V/24V rails (I can measure 5.2V on...
Forum: Troubleshooting TVs and Video Sources 03-28-2020, 03:43 PM
Replies: 28
Views: 1,953
Posted By katinkapicinyke
Re: problem with psu in Samsung 32"

Hi All,
Sorry to resurrect such an ancient topic but dealing with an issue on the same model (Samsung LE32A457C1D) with the same PSU board. Did checks on the cold side of the PSU board, no sign of...
Forum: Announcements & Related News 03-28-2020, 03:20 PM
Replies: 23,413
Views: 1,423,500
Posted By katinkapicinyke
Re: New Members - please post your introductions here

Hi All,
I'm Si, 25 years old IT guy, who likes to spend time on electronics and other repairs.
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