happy days! Mine is still working as well! 
Tommy100
Member
Last Activity: 10-11-2013, 10:15 PM
Joined: 07-12-2011
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Re: Samsung B4K-50 PSU
happy days! Mine is still working as well!
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Re: Samsung Plasma power supply, blown standby IC
Hi ed i found the manual [URL="http://elektrotanya.com/samsung_bn96_01217a_b4k-50_alexander-42-50_inverter_power-supply_sch.pdf/download.html"]here.[/URL]Re: Samsung Plasma power supply, blown standby IC
Hi ed i found the manual [URL="http://elektrotanya.com/samsung_bn96_01217a_b4k-50_alexander-42-50_inverter_power-supply_sch.pdf/download.html"]here.[/URL]Leave a comment:
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Re: Samsung B4K-50 PSU
The two units were mounted above the main psu, but its a bit hot there. They are not obstructing the flow from the Heat syncs. Its just warm up there with the lid closed, so I will put in 2 Boxer fans till The components can be scourced.Leave a comment:
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Re: Samsung B4K-50 PSU
Used a 18V Compaq supply with an lm7805 on heat sync, the heat sync can be earthed for neg, and the 5V connected to where D28 was, C39+.
Neg from the supply was put on C39-.
The HP Printer 18V supply Secondary is well insulated and it was connected to where IC8 was. + to output of IC8 and neg to the earth, center leg.
The input supply was taken from across CX4S pins.
Both smpsu`s used have built in fuses.
The only function that is not working is the standby relay, dont know why. But the set...Leave a comment:
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Re: Samsung B4K-50 PSU
Removed the 18V regulator and used a HP Printer supply 18V. It is a smpsu and the secondary is well isolated now all I need is a sturdy Compaq 5V charger, tidy up the mods and its tv time!
Leave a comment:
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Re: Samsung B4K-50 PSU
Removed all the blown components and ones that look like they might pull down an external supply.
If I remove D28 on the Secondary of the Transformer and apply 5Volt to the smoothing cap, I can get the remote / power light to come on and switch with the front panel.
But nothing else happens power wise. The Aux supply seems to feed a 18V Regulator, but I cannot feed it from a bench supply as the negative of that section is hot.
The printer supply I wanted to use cannot supply sufficient current so another plan is needed....Leave a comment:
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Samsung B4K-50 PSU
Hi guys, sorry to duplicate a thread.
I have posted on [URL="https://www.badcaps.net/forum/showthread.php?t=8831"]https://www.badcaps.net/forum/showthread.php?t=8831[/URL] as well, this is just a Bump.
My PSU has exactly the same damage, and I do not know if IC2 is avalable in South Africa.
Does anyone know what the Output Voltage is of the Standby supply?
I have a nice small Casio printer SMPSU that gives 24V 0.8A and I would like to use it as Aux supply. (with the blown components and Primary and secondary rectifier / Caps removed.)... -
Re: Samsung Plasma power supply, blown standby IC
LOL! My burnout looks the same as page 1.
I suspect it will be difficult to obtain IC2 here in South Africa.
What are the primary outputs of this section? Perhaps I could just bypass it with a Cell charger? Or printer supply?
Any thoughts?Leave a comment:
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Re: Samsung Plasma power supply, blown standby IC
Hi guys, I have had quite a burnout by IC2, cannot read the values of R2, C268, C51.
This all started with a arc across D26 & 27.
If it is possible to get a copy of the Samsung MOD-B4K-50 Diagram It would be most appreciated.
Thanks Tom.Leave a comment:
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Re: New Members - please post your introductions here
Hi.
Tommy from South Africa.
Technician in TV & Radio Transmitter field.
Started with AM and hopefully ending with DTT Transmitters, Lotsa Valve 10KW TV Thompsons and NEC thrown into the 30 Year mix.
Found this wonderful site while looking to fix my Plasma.. :pLeave a comment:
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