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Search: Posts Made By: CapLeaker
Forum: Troubleshooting Power Supplies and Power Supply Design 08-15-2022, 04:15 AM
Replies: 28
Views: 3,190
Posted By CapLeaker
Re: QW-MS3010D 30V 10A Variable PSU Blown MOSFET

So the CC isn’t working properly? Maybe look at the sensing circuit.
Forum: Troubleshooting TVs and Video Sources 08-10-2022, 04:57 PM
Replies: 6
Views: 258
Posted By CapLeaker
Re: Authorized Repair Center Charges

Canadians always getting gauged… unfortunately.
Forum: Troubleshooting & Designing Networks 08-10-2022, 02:53 PM
Replies: 28
Views: 618
Posted By CapLeaker
Forum: Troubleshooting & Designing Networks 08-03-2022, 04:33 PM
Replies: 28
Views: 618
Posted By CapLeaker
Forum: Troubleshooting Computer Displays 08-02-2022, 04:03 PM
Replies: 24
Views: 293
Posted By CapLeaker
Forum: General Capacitor Questions & Issues 07-30-2022, 01:29 PM
Replies: 13
Views: 472
Posted By CapLeaker
Re: Nichicon - discontinuing many electrolytic capacitor series

UHE and UPW I used quite a bit. Those were decent caps.
Forum: General Electronics Technical Discussion 07-27-2022, 04:04 AM
Replies: 63
Views: 1,482
Posted By CapLeaker
Re: Another water pump automation project (suggestions ?)

If this thing was running manually before, why the change to web control? A raspberry pi has 26 GPIO pins that are programmable. Also you can cluster them.
Forum: General Capacitor Questions & Issues 07-24-2022, 05:02 PM
Replies: 13
Views: 280
Posted By CapLeaker
Re: Any good references for variable capacitor design?

Is it possible for the op to post the project? Maybe scan it and upload it here?
Forum: Troubleshooting TVs and Video Sources 07-24-2022, 04:50 AM
Replies: 4
Views: 276
Posted By CapLeaker
Re: Samsung 55NU6900 - Heard a pop then tv is dead, burnt cap & dead fuse

Remove the blue cap, that is blown. Check the 2 resistors for spec value (resistors go higher in value or open), remove the mosfet and check it and keep on going until you removed all the shorted or...
Forum: Troubleshooting Game Consoles & Other Weird Devices 07-23-2022, 03:04 PM
Replies: 6
Views: 476
Posted By CapLeaker
Re: Maxxair 4500K RV roof fan only works on intake, does not exhaust

Either the relay failed, the relay coil failed, or the relay isn’t getting energized.
Forum: Troubleshooting Game Consoles & Other Weird Devices 07-20-2022, 05:39 PM
Replies: 10
Views: 339
Posted By CapLeaker
Re: GNB 2100LP industrial battery charger

Redwire, nothing escapes your eye! Very good catch! Seems like the charger had problems there before.
Not sure what to think, but it seems there must be more to this charger than we see on the pic.
Forum: General Electronics Technical Discussion 07-20-2022, 05:27 AM
Replies: 25
Views: 396
Posted By CapLeaker
Re: Queen coffee CQ MN-2 Heating element

On what? The heating element or the high limit temperature trip switch? If you do get continuity on both, things are good and it should work, unless one of the on / off switches or fuse is bad.
Forum: Troubleshooting TVs and Video Sources 07-20-2022, 05:18 AM
Replies: 4
Views: 276
Posted By CapLeaker
Re: Samsung 55NU6900 - Heard a pop then tv is dead, burnt cap & dead fuse

take that 450V cap out. Then measure on those pads for short or not. You definitely need a new cap and a fuse.
Forum: Troubleshooting Game Consoles & Other Weird Devices 07-19-2022, 09:02 PM
Replies: 18
Views: 946
Posted By CapLeaker
Re: Troubleshooting Uni-T EEPROM ErrE

Check with an oscilloscope the data line, clock and the main oscillator for activity.
Forum: General Electronics Technical Discussion 07-19-2022, 08:24 PM
Replies: 25
Views: 396
Posted By CapLeaker
Re: Queen coffee CQ MN-2 Heating element

You can test leakage of the heating element using a “megger”. Hmm… 2300W on 240V… that hing will actually brew something! Check the tripp switch first.
Forum: Troubleshooting Power Supplies and Power Supply Design 07-15-2022, 06:41 PM
Replies: 5
Views: 302
Posted By CapLeaker
Re: what is this symbol on tvs diode ?

I didn't look at the datasheet, as I just looked at your pics and noticed no bands and nothing was mentioned. Carry on! :-D
Forum: Troubleshooting Power Supplies and Power Supply Design 07-15-2022, 05:43 PM
Replies: 5
Views: 302
Posted By CapLeaker
Re: what is this symbol on tvs diode ?

Just this one is bi-directional, since the band on on side of the diode is missing.
Forum: Troubleshooting Game Consoles & Other Weird Devices 07-15-2022, 05:35 PM
Replies: 10
Views: 339
Posted By CapLeaker
Forum: Troubleshooting TVs and Video Sources 07-15-2022, 04:31 AM
Replies: 16
Views: 492
Posted By CapLeaker
Re: Samsung UN55ES7003 has blown fuse on TCON and short to ground.

If you do use voltage injection, just remember that you do not inject more voltage than that voltage rail you in jest into can handle. So for example a 3.3V rail, make sure you don’t exceed 3.3V. The...
Forum: Troubleshooting TVs and Video Sources 07-15-2022, 04:16 AM
Replies: 3
Views: 199
Posted By CapLeaker
Re: Sony Bravia 50w808C - Gliched screen!

To me it looks like the LCD has suffered some damage on the lower left. Check the tab bonds if someone “washed” the screen and also check the little LCD driver boards. You have to check voltages like...
Forum: Troubleshooting TVs and Video Sources 07-14-2022, 05:23 PM
Replies: 1
Views: 153
Posted By CapLeaker
Re: TCL 55P607 / 55P605 tcon dump

Maybe buggy firmware, or a gone bad firmware update?
Forum: Troubleshooting TVs and Video Sources 07-14-2022, 05:09 PM
Replies: 1
Views: 335
Posted By CapLeaker
Re: Samsung PM55H loses HDMI

Are the backlights turning off? Turn the backlights down to 50% and see if they stay on longer.
My bet is that the backlight setting is 100%.
Forum: Troubleshooting Game Consoles & Other Weird Devices 07-14-2022, 04:56 AM
Replies: 35
Views: 3,150
Posted By CapLeaker
Re: Agilent U1253B OLED display failed

Per’s hawkish eye brings out his OCD full tilt on bulging caps! :)
Those caps look a little pregnant. In order to calm you a little down I’ve opened my Agilent U1733C and snapped a few pictures....
Forum: General Electronics Technical Discussion 07-14-2022, 04:07 AM
Replies: 6
Views: 302
Posted By CapLeaker
Re: Genius Ultramatic R2-T3 remote,Need help identifying component

Just match the frequency to a different bed and see if it works?
Forum: Troubleshooting Audio Equipment 07-13-2022, 05:30 PM
Replies: 6
Views: 345
Posted By CapLeaker
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