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Search: Posts Made By: llonen
Forum: Troubleshooting TVs and Video Sources Today, 08:44 AM
Replies: 0
Views: 3
Posted By llonen
Blaupunkt 43/134m-gb-11b-fegpx-uk

I might have this coming into the workshop for a client repair, from the behaviour most likely this is a LED back-light problem. Before quoting and taking this repair in I am ascertaining the...
Forum: General Electronics Technical Discussion 03-18-2019, 02:16 AM
Replies: 9
Views: 143
Posted By llonen
Re: Failed RF power transistors...DC testing (i.e. with multimeter)?

I guess that rather depends on the value of the kit in question, I used to repair quite a lot of amateur radio equipment when it was a more popular interest and still get work this of nature in from...
Forum: General Electronics Technical Discussion 03-13-2019, 11:04 AM
Replies: 14
Views: 183
Posted By llonen
Re: Air Supply Systems

I have made several of these silent compressors over the years for people, and despite what one would think and expect from the lack of proper lubricant they do seem to work for low volume...
Forum: General Electronics Technical Discussion 03-10-2019, 01:54 AM
Replies: 5
Views: 110
Posted By llonen
Re: Tv SoC BGA

So yes a more thorough reading of at least some of the academic material did or still points towards some of the problems being solder ball related so yes there might be some millage in re balling....
Forum: General Electronics Technical Discussion 03-09-2019, 07:41 PM
Replies: 5
Views: 110
Posted By llonen
Re: Tv SoC BGA

Not really since I am not familiar with the 'publisher' there is however an extensive amount of academic material available relating to the subject of flip bga failure modes. These are a few that...
Forum: General Electronics Technical Discussion 03-09-2019, 11:14 AM
Replies: 5
Views: 110
Posted By llonen
Re: Tv SoC BGA

If your referring to re-flowing or re-balling I no longer offer this service and pretty much no longer replace GPU's or BGA SoC since sourcing reliable replacement parts was becoming problematic....
Forum: Troubleshooting TVs and Video Sources 03-09-2019, 09:14 AM
Replies: 61
Views: 476
Posted By llonen
Re: Sharp LC-55N620CU PSU 192020 help ID'ing a transistor

If your sure this is a psu board problem, then given the time I would probably opt for an used example, of which there seem to be several reasonably priced examples available to you.
...
Forum: General Electronics Technical Discussion 03-05-2019, 03:08 PM
Replies: 51
Views: 8,214
Posted By llonen
Re: Let's See What You Got!

Well I was supposed to put up a couple of pics of the workshop, and I really did mean to tidy, but last year was not a good tidying year and this year looks no better lmao.
Forum: Troubleshooting Game Consoles & Other Weird Devices 03-01-2019, 05:55 PM
Replies: 9
Views: 224
Posted By llonen
Re: PS4 Controller acting weird

Could be a bad analogue controller I suppose measure the pots, I see a few of these come in weekly for repair, and have replaced more than a few of these controllers. It brings in a income along with...
Forum: Troubleshooting TVs and Video Sources 02-26-2019, 06:18 PM
Replies: 35
Views: 698
Posted By llonen
Re: Backlight rare white rings. Samsung 50in 4K TV

What is the history of this set, is this a previous screen repair or otherwise.
Forum: General Electronics Technical Discussion 02-15-2019, 04:30 AM
Replies: 20
Views: 229
Posted By llonen
Re: Measuring crystal oscillators with scope ?

That simplifies measurement then, a near field probe with pre amp and scope.
Forum: General Electronics Technical Discussion 02-13-2019, 09:04 PM
Replies: 20
Views: 229
Posted By llonen
Re: Measuring crystal oscillators with scope ?

There are several different ways I would go about this, the simplest being a near field probe and pre-amplifier attached to a scope or spectrum analyser with the device under test powered. Directly...
Forum: General Capacitor Questions & Issues 02-03-2019, 05:55 PM
Replies: 25
Views: 593
Posted By llonen
Re: Overvolting/reversing a polymer cap

Needs more voltage, or lower voltage polys, I have had another look at the power supplies I have here, I can get up-to 60 volts with 32 amps available, on the high voltage side I can relatively...
Forum: General Capacitor Questions & Issues 02-02-2019, 08:41 PM
Replies: 25
Views: 593
Posted By llonen
Re: Overvolting/reversing a polymer cap

Well I have put the offer out there, Uk mailing address to be supplied via private message to interested party's. If you want to send me a selection of test subjects I will oblige in over volting and...
Forum: Equipment Usage, Soldering, Techniques, and Reviews 02-01-2019, 05:48 PM
Replies: 4
Views: 260
Posted By llonen
Re: Conform Coatings Application On Motherboard /Circuit board

I am not sure what you are trying to achieve here, if the con-formal coating is intact and you have not removed any of the material to effect repairs I am not sure why you would need to add another...
Forum: General Capacitor Questions & Issues 02-01-2019, 03:31 AM
Replies: 25
Views: 593
Posted By llonen
Re: Overvolting/reversing a polymer cap

I am not buying perfectly good capacitors to slaughter, but if some one wants to send me some for destructive testing I will be more than happy to oblige and put the results up on my youtube channel....
Forum: General Capacitor Questions & Issues 01-31-2019, 05:55 PM
Replies: 25
Views: 593
Posted By llonen
Re: Overvolting/reversing a polymer cap

Well this is all the inspiration I need, what values did you have in mind and you you be prepared to send said samples for 'testing' I can currently manage 30 volts at 20 amps or 60 volts at 15 amps....
Forum: Equipment Usage, Soldering, Techniques, and Reviews 01-29-2019, 09:35 AM
Replies: 23
Views: 309,496
Posted By llonen
Re: How to test bad capacitor with digital multimeter?

Your probably right there, most of the component pulls I make when servicing and repairing electronics are already known to me as bad. This is probably why I have yet to obtain a decent LCR / ESR...
Forum: Equipment Usage, Soldering, Techniques, and Reviews 01-28-2019, 06:03 PM
Replies: 23
Views: 309,496
Posted By llonen
Re: How to test bad capacitor with digital multimeter?

Yeah well you said it, I am aware of these and the hundreds of clones of these things which have been around for a good decade if not longer. And not at all what I am looking for, currently until I...
Forum: Equipment Usage, Soldering, Techniques, and Reviews 01-25-2019, 04:07 AM
Replies: 23
Views: 309,496
Posted By llonen
Re: How to test bad capacitor with digital multimeter?

I have been using function generator / scope to test ESR and will until such time as I can locate either a suitable ESR meter or LCR bridge.
Forum: Equipment Usage, Soldering, Techniques, and Reviews 01-25-2019, 02:45 AM
Replies: 4
Views: 260
Posted By llonen
Re: Conform Coatings Application On Motherboard /Circuit board

The boards you describe will come with a con-formal coating already applied to protect the printed circuits and related equipment from their environment, that said if you have had to remove any of...
Forum: General Electronics Technical Discussion 01-21-2019, 06:49 PM
Replies: 27
Views: 406
Posted By llonen
Re: What do you think about this meter Feedback need

Yeah I don't get the point of that feature, its the sort of thing you can do with a laptop and free software using the sound card if I recall. Well assuming you have the aforementioned laptop,...
Forum: General Computer Discussion 01-18-2019, 06:43 AM
Replies: 31
Views: 857
Posted By llonen
Re: reset password windows 10

I don't run the abortion that is win 10 so I would not necessarily know but tell me the age old hack,

Find osk.exe and rename it to osk.bak
Find cmd.exe and make a copy naming it to be osk.exe....
Forum: General Computer Discussion 01-18-2019, 06:33 AM
Replies: 70
Views: 1,244
Posted By llonen
Re: The 2019 Operating System Thread

Same as last year and the year before, and not likely to change this year other than perhaps a new server build.

Main workstations win 7

MacBooks Some version MacOS

Test server machine some...
Forum: General Electronics Technical Discussion 01-18-2019, 06:16 AM
Replies: 24
Views: 417
Posted By llonen
Re: Has anyone had any sucess with HHO as a fuel source?

Brown gas, that sounds like the stuff that comes out of my, oh never mind. This scam has been doing the rounds for like an age and is a pile of said brown stuff.
Showing results 1 to 25 of 315

 
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