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iMac A2438, destroyed capacitor and coil.
Hi people.
iMac A2438, board 820-02009-06. Some insect has killed itself destroying capacitor and coil next to it. No chance for buying donor board, so I'm asking you for help about values of destroyed components.1 Photo
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Samsung UE50TU7099U no picture no sound, backlight present
TV has one combo board (VTT55UH160). Symptoms are like this.[URL=filedata/fetch?id=3163034&d=1702632404][ATTACH=JSON]{"alt":"Click image for larger version Name:\tthumb_321499.jpg Views:\t0 Size:\t1.8 KB ID:\t3163034","data-align":"none","data-attachmentid":"3163034","data-size":"custom","height":"66","title":"thumb_321499.jpg","width":"117"}[/ATTACH][/URL]
When part of the screen is disconnected (white part), it looks like this [ATTACH=JSON]{"alt":"Click...7 Photos
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Re: PS5 cut off or freeze on main menu
How long does it take from powering PS5 on, to the moment it freezes? Try couple of times and check if that time is constant or not.
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Re: Need Value of capacitor Nintendo switch
Check those two above the dots. Probably all three are the same.
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Re: PS5 black screen with sound
We don't have much more options then. Since PS5 is working fine, there is something wrong with connection or hdmi port itself. I'm not implying you did something wrong, but could you share your measurements? Also post detailed pictures of hdmi port pins and hdmi ic ant its surroundings? Maybe you missed something.
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Re: PS5 black screen with sound
Do you have all these voltages?...
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Re: PS5 black screen with sound
So, the PS5 is working fine with no picture (even in safe mode) right?
- Push every pin in hdmi port to make sure it's soldered.
- Check if there's no shorts between pins.
- Check the hdmi ic surroundings, also on the other side of the board (filters for continuity, caps for shorts, cold solder joints, etc.) and for missing components.
- Check the traces from hdmi ic
- Do the diode and voltage readings on hdmi port. You can find pictures with good values on the internet. If you don't have test board, sacrifice...
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Re: PS5 black screen with sound
Sorry for trivial question, but have you checked it with another HDMI cable?
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Re: Sony PS4 slim CUH-2216A power supply ADP-160FR not working after short in PFC
I have working ADP-160FR. Did some measurements and looks like your IC151 is OK.
I have the same standby voltages on the optoisolators and IC31.
No 12V on IC41 in standby. VCC appears after turnig psu on.
As I said, I'm not PSU expert, but if you want me to do other measurements, let me know (here or in PM).
I'm giving you readings on IC32 DAP049B (diode test)
1. 450
2. X
3. 506
4. 507
5. 512
6. 654...
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Re: Sony PS4 slim CUH-2216A power supply ADP-160FR not working after short in PFC
I'm not an expert on power supplies:
ACIN_DET - 4.8V
ACDC_STBY - 0V short this with ACIN_DET to start 12V
+5VSB_RETURN (GND) - 0V
+5VSB - 4.8V
If ACIN_DET and +5VSB are going to 0 after powering on, that could point to faulty DNP012AH:
0.082 seems to be too low. Check components on this line. If they are OK, that is next clue to replace DNP.
Is PFC circuit working (charging C1, C2 caps up to 400-410V) during powering...
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Re: Lenovo IdeaPad Flex 5 14IIL05, ticking sound
OK, I'm an idiot . Literally an idiot, stupid, moron (you can put another offensive words, if you like ).
I have tracked back that 3D3V_RTC_AUX signal and it led me to PU4501 - TPS51393, which I had changed before. But instead another TPS51393, I soldered TPS51395 and didn't notice it.
Now, laptop is working (and it should have been days ago). The best thing is nothing was fried because of my stupidity. Except my pride and self-confidence.
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Re: Lenovo IdeaPad Flex 5 14IIL05, ticking sound
No change. Besides I have discovered that 3D3V_RTC_AUX is 4.8V. Is it good? With borrowed thermal camera I've also discovered EC getting warm at one point. After removing it ticking sound stopped. All oscillating voltages are now stable. I will order new EC and let you know.Last edited by theManieq; 03-30-2023, 01:14 PM.
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Re: Lenovo IdeaPad Flex 5 14IIL05, ticking sound
OK, removed PU4405
[B]PU4403[/B]
Pins 1-2: Mohms
Pins 2-9: Mohms
Pins 9-1: 114k
Pins 7-8: 97k
Pins 7-9: Mohms
Pins 9-8: Mohms
[B]PU4405:[/B]
Pins 1-2: OL
Pins 2-9: 30k and growing
Pins 9-1: OL
Pins 7-8: OL
Pins 7-9: 1k and growing
Pins 9-8: OLRe: Lenovo IdeaPad Flex 5 14IIL05, ticking sound
OK, removed PU4405
[B]PU4403[/B]
Pins 1-2: Mohms
Pins 2-9: Mohms
Pins 9-1: 114k
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Re: Lenovo IdeaPad Flex 5 14IIL05, ticking sound
[B]PU4403[/B]
Pins 1-2: Mohms
Pins 2-9: Mohms
Pins 9-1: 114k
Pins 7-8: 100k
Pins 7-9: Mohms
Pins 9-8: Mohms
[B]PU4405:[/B]
Pins 1-2: Mohms
Pins 2-9: Mohms
Pins 9-1: 114k
Pins 7-8: 101k
Pins 7-9: Mohms
Pins 9-8: MohmsRe: Lenovo IdeaPad Flex 5 14IIL05, ticking sound
[B]PU4403[/B]
Pins 1-2: Mohms
Pins 2-9: Mohms
Pins 9-1: 114k
Pins 7-8: 100k
Pins 7-9: Mohms
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