Re: Philips 65PUS6521/12 voltage fluctuation
I will try the SAM option first, I'll report back when it's done.
Gabriel
Badcaps Veteran
Last Activity: 01-13-2025, 06:55 PM
Joined: 01-02-2010
Location: Northern Norway
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Re: Philips 65PUS6521/12 voltage fluctuation
R9101 measures .01 -.02 ohm in circuit - in service manual it is listed as 0.2R 2W so I think it's ok.
Yes C9145 is 1kv but I see I fitted a 102K (1000PF) instead of 100PF - perhaps the reason for high temp and no hdmi ?
I'm not experienced enough to rewire a transformer, I normally work with much simpler things then this tv hehe....Leave a comment:
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Re: Philips 65PUS6521/12 voltage fluctuation
There is written 'Set Option: 061' on the label, perhaps thats it ?Leave a comment:
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Re: Philips 65PUS6521/12 voltage fluctuation
Yes I mixed up chip names, yes I did put back the original as431 and it did not get picture on hdmi back, temps are still high.
Just to be clear I did also replace U9101 3S121 earlier as it measued ~70C within a few seconds after connecting to 230V.
Original R9101 is open so it is defect, I don't know what Opcodes are - I'm not familiar with this sorry.
Ok, I saw this - [url]https://factory-reset.com/wiki/Philips_Service_Menu[/url]
I can see if I can get to work.
...Leave a comment:
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Re: Philips 65PUS6521/12 voltage fluctuation
Screenshot of manual is from Philips+55PUS6401+Chassis+QM16.3E service manual....Leave a comment:
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Re: Philips 65PUS6521/12 voltage fluctuation
Yes, 12v measured 12.46 - 5v measured 3.5v I dont remember if this was in standby or on.
I'm not sure if 5v marked pins are supposed to measure 5v or not as a service manual for the 55" tv of similar Philips type tv listed 3.5/5.Leave a comment:
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Re: Philips 65PUS6521/12 voltage fluctuation
Yes both are AS431, I did put back the one from Philips and tv still behaves the same. u8607 was marked 3S121, 8k642a, 381l and the new was sourced form Aliexpress and it's marking are 3S121, sk6d1a, 230l.
What is PSB ? do you mean voltages of the small signal board with hdmi, network and so on ?Last edited by Gabriel; 12-08-2022, 12:51 PM.Leave a comment:
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Re: Philips 65PUS6521/12 voltage fluctuation
I fitted a new R9101 and U8607 and now tv turns on and shows picture but a few gremlins is still here.
Laptop does find the Philips is connected but tv won't show any picture on any of the 4 hdmi ports and screen message is 'no input' - it does show all menus and reacts to remote just as it should. I did test all 3 usb ports and all show 5.18v, ambilight also works as it should.
I fitted a pad under the K13A65U since I did not have contact paste, the
K13A65U and C9145 is ~100C almost instantly, why...Leave a comment:
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Re: Philips 65PUS6521/12 voltage fluctuation
Thanks for taking your time to explain this to me, I will replace C9103 too.
Yes, I saw it was a TO-92 ic , I thought if it was ok it was no need to replace.
I just put in an order for new AS431 so I will follow your advice.
Thanks to both of you for helping with this problem, I will report back when parts arrive....Leave a comment:
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Re: Philips 65PUS6521/12 voltage fluctuation
R9109 is 10Kohm and R9104 measures 150ohm so ok, U8607 measures ok in transistor tester I guess. Photocoupler I will remove and test out of circuit.
I have an order for new 0.2ohm resistors R9101 and will report back when they arrive....Last edited by Gabriel; 11-05-2022, 06:27 AM.Leave a comment:
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Re: Philips 65PUS6521/12 voltage fluctuation
R9114, R9127 measures 2.2 - 2.7 Ohm in circuit - R9113 measures 5.1ohm som they seems fine, C9103 measures ok out of circuit.
I have measured R9101 before and it was ok but after moving it out of circuit now I can't get a measurement on it.
Weird it won't measure anything now - perhaps it was 'half alive' if there is souch a thing in resistor world....Leave a comment:
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Philips 65PUS6521/12 voltage fluctuation
This tv had a blow C9145 1KV capacitor and a U9101 3S121 on the back that reached ~70C within a few seconds after connecting to 230V.
I replaced C9145 with a similar type cap and ordered a 3S121 on aliexpress and the chip now is at 30C but vcc on 3S121 goes up to 14v dc and down to 8v and up again.
I did check Q9109 K13A65U in a transistor tester, I think it is fine.
I can't seem to find other faults on this board, what is blown since the voltage is going up and down ?
My psu is a 715G7831-P01 and I found a service manual that has almost... -
Re: Dell u2412mb troubleshooting
I have fixed a handful of these monitors and it was always the same blown fairchild 278r12. There are two of them on this board and since the lower 278r12 is used for providing power to the external dell speaker which we dont use I just removed the broken one and fitted the lower one in it's place.Leave a comment:
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Re: HP Z440 Workstation Bios
I had the same problem on a Z420 - I fixed it this way, maybe it works on Z440 too ?
'Ctrl+A opens additonal fields in Security>System IDs menu so I successfully added the proper asset tag, UUID, chassis sn, build ID and featurebytes.'Leave a comment:
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Re: ThinkVision T2454p backlight but no display - blown SOT23-8
This is my follow up post:
I ordered a few MPS MP2315 from mouser.
[ATTACH]221927[/ATTACH] Removed the blow'n MP2315
[ATTACH]221928[/ATTACH] and fitted a new one.
[ATTACH]221929[/ATTACH] 2 new FR instead of Aishi.
[ATTACH]221930[/ATTACH] New FR next to the Elite GP polymer.
[ATTACH]221931[/ATTACH] Putting it back together.
[ATTACH]221932[/ATTACH] And it's back working as it should.
[ATTACH]221933[/ATTACH]...Leave a comment:
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Re: Elite GP series datasheet anyone ?
It might be that one - I took the GP cap off and esr measures 0.02-0.03 , case size is correct but temperature markings is not if it's the actually temperature we see on this cap.
I think the cap is ok, so I will solder it back in.Leave a comment:
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Re: Logitech Z906 Power Supply
Good pictures of the burnt resistor here - [url]https://imgur.com/a/xPmqG[/url]
R22 is the same as R21.
Re: Logitech Z906 Power Supply<br />...<br /> <br />Re: Logitech Z906 Power Supply
Good pictures of the burnt resistor here - [url]https://imgur.com/a/xPmqG[/url]
R22 is the same as R21.
Leave a comment:
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Re: Elite GP series datasheet anyone ?
The GP cap is marked as 165 and the the ED cap is 105....Leave a comment:
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Elite GP series datasheet anyone ?
I'm working on a monitor powersupply and I'm trying to source the Elite GP series datasheet so I can replace the caps with better ones.
Elite's homepage don't have the GP series listed and I can't find it anywhere else either.
If it matters the other Elite cap next to it is an ED series with low esr and high ripple current capability.
Can you help ?
Thanks... -
Re: Dell p2414h ips led
You most likely have a loose contact where the ribbons are connected to the glass with glue, it is very difficult to fix.
You can try to apply a little pressure to the ribbon closest to the line and see if it goes away, if it does add a pressure pad and put screen together and if not replace screen.Leave a comment:
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