Re: Samsung 24" power supply BN44-00195A first stage voltage?
Replaced resistor, check zener = ok.
I installed 2 other mosfet. I used irfp460 (to247) just for testing i do not have any 9N50C with me.
Now, with no load i pull .1 amp on 120vac.
5.2v standby = ok
385vdc on cp803 = ok
24v output = 22.3vdc i had 24v with 9N50C and i dont have any reason to not have 24vdc again. With no load i dont think that the different mosfet is a problem.
Also, at the gate of the mosfet i have 50% of duty cycle. It's huge without any load....
Yannick99
Member
Last Activity: 05-19-2020, 07:38 PM
Joined: 11-04-2018
Location: Trois-Rivieres
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Re: Samsung 24" power supply BN44-00195A first stage voltage?
Yes, my mistake. I'll check on tomorrow for the zener. Let you know thank you...Leave a comment:
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Re: Samsung 24" power supply BN44-00195A first stage voltage?
Yes both. QP801 is fine, and the 100 ohm on his gate is was. I dont know why this one blew on first time.
Now fuse are blew and mosfet are shorted. Must replace that again.
For the fuse i maybe did an error. It was 100 marking. I put 100 ohm but 100 ohm is 1000 marking. I do not have the priginal resistor but found a picture on internet. I did a red circle.
[url]https://1drv.ms/u/s!AnKLPDy3pII_vkbe0rWuLoE7DfEy?e=5gE13g[/url]
But a gate have...Last edited by Yannick99; 05-15-2020, 08:12 PM.Leave a comment:
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Re: Samsung 24" power supply BN44-00195A first stage voltage?
I know it's an old thread... but still, need help. I have a BN44-00195A fixed couple years ago and now new problem. QM801, 802 blown with the 0,22ohm rm801. Also a 100 ohm to the gate of qp801(not in schematic). Replace those parts. Turn on with bulb in serie and this one was turn on.... I tell to myself, i'll try direct. And was working again. 385vdc on big cap, 24v, 5v all was looking fine.
Reinstall the monitor all was ok and 5 minutes later it wasn't working again. Same mosfet, fuse blown.
...Leave a comment:
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Re: Help and question on Hitachi P50H4011 P50H401
anyone ?Leave a comment:
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Re: Help and question on Hitachi P50H4011 P50H401
Hi, i replaced upper buffer board and replaced psu bad capacitor. Now tv is working but picture interlaced... I reseat 5 times the upper buffer board just in case. Same problem. Any idea ?...Leave a comment:
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Re: Help and question on Hitachi P50H4011 P50H401
thank you i'll do that...Leave a comment:
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Re: Need Lenovo software Change Type & Serial Number
Maintenance 1.9 shoul be working. Try another usb stick. You should be able to boot on itLeave a comment:
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Help and question on Hitachi P50H4011 P50H401
Hi,
i'm fixing an old Hitachi P50H4011. The upper buffer is defective. If i unplug this one, i can see the bottom picture but with some strange corors. See picture. So i'd like to know if the problem is only the upper buffer of there are other problem ? What do you think ?...Last edited by Yannick99; 11-08-2018, 03:49 PM. -
Re: New Members - please post your introductions here
Hello, i'm fixing everything i could. I also create some stuff on instructable (Yannick99) and also do my version of capacitor of carlson's lab cap tester here: [url]https://www.youtube.com/watch?v=WDEmvHvDReg&t=4s[/url]
So i'm glad to be here. See you!Re: New Members - please post your i...Reg&t=4s[/url]Leave a comment:
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