Hi Sorin. For cleaning a potentiometer or a fader a Deoxit F5 and afterwards Deoxit F100 for better contact and lubrication works often like a miracle and if the actual track is not destroyed it will fix it. Saved me many times. For any other contacts cleaning a Deoxit D5 and D100 can be used. Hopefully it will help.
@acampirot
11 ай бұрын
You need potentiometer 10K. B mark should be linear resistance change of resistance when you turn the angle. You can see this mark on front side of part.
@ruudb72
11 ай бұрын
Indeed, the carbon track will get dirty quickly again. Also the cap is pulling everything together so contact runner will put some more pressure on it.
@traditionaltools5080
11 ай бұрын
Uh, those pots have a small cutout on the side. Spray deoxit or contact cleaner in and rotate for 30 seconds. Super easy. Then you can measure them to make sure they dont have dead spots. That can also be an issue, but you need an analog Ohm meter.
@humamalrawi1276
11 ай бұрын
Two years ago, I came across three power supply devices that the owner of the maintenance center had abandoned for this reason, and they were suffering from the same problem. This is due to the frequent use of this particular resistor (a consumable reason).
@badeadrian
11 ай бұрын
I'm using disc brake cleaner spray for cleaning the potentiometer... it's a very good cleaner.. works every time 👍
@batman4e
11 ай бұрын
You don't need to open the potentiometer, just spray some contact cleaner.
@andrewverran3498
11 ай бұрын
Some are sealed and have not a little hole for contact cleaner...you have to open them as they are SEALED
@OldjunkAJB
10 ай бұрын
Since the mid 60s, I have always used cigarette lighter fluid to clean the pots. Do not take it apart just squirt it in and work the pot.
@andrewverran3498
10 ай бұрын
That's very interesting, which one, the compressed air can type??
@bennygaweseb
11 ай бұрын
Proper hot glued camera😂
@Skarz289
11 ай бұрын
i will swap it or put the metal thing back just because maybe sometimes you need low current and by mistake you will push 5 amps when trying to go to the lowest current point SO yes i will swap it
@waynesallee-com
11 ай бұрын
Yes, I see that as a big danger. He will turn it down to real low amps, and suddenly hit max amps.
@mryanzou
11 ай бұрын
Hi Sorin, I remember that your bench PSU came without current protection, and you were about to tell us how to remove it but this one was already disable. So, How you remove current protection on bench psu ?
@andrewverran3498
11 ай бұрын
FOLLOWING !!!!
@Dohcom1
11 ай бұрын
You fixed again, Well done, Thanks for video Sorin!
@pp3v42_g3h
11 ай бұрын
The front of the potentiometers have a B10k, you need 10k linear pots.
@candabi
11 ай бұрын
usually potenciometers have a little hole to use contact cleaner spray
@kriswillems5661
11 ай бұрын
Given you use the thing all day, it might be a good idea to install a high quality potentiometer, like a bourns PDA-24
@knightwar3
11 ай бұрын
I replaced the fan on my unit with 12v noctua fan that has a good airflow but since the original fan runs at 24v (27v measured) and since i don't have a buck converter i just placed a 12v dc adapter (rectangular shape) to power the fan inside the unit secure it with a double sided tape and connected it to the mains of the psu switch now the psu is very quiet
@SkyDown15
Жыл бұрын
I used to repaired amplifiers, and I came to the conclusion that they arent fixable, only temporary. So Im always replaceing then
@waynesallee-com
11 ай бұрын
LOL the video shows that it was uploaded 7 hours ago, and yet your post shows that it was posted 3 weeks ago. @SkyDown15
@CarlosGarcia-d3e
11 ай бұрын
Nobody is going to teach the following companies how to build: a) a DMM (digital multimeter) to Fluke b) a oscilloscope to Tektronix c) a soldering station to Weller ... Analogously to Allen Bradley (founded in 1903) and Clarostat (today Honeywell founded in 1906) how to make potentiometers. Allen Bradley sold its commercial components division to Adafruit (which builds the original Hakko soldering stations). Another way of saying it; in mouser write: adafruit 10K potentiometers and choose the linear type, very economical by the way. All the best.
@fernandocastro-GPS
11 ай бұрын
Why didn't you put the potentiometer cover back?
@gonedoneggonedoneg9863
11 ай бұрын
Use yellow wd 40 special contact cleaner
@cecilmiller2387
9 ай бұрын
Whatever happened to those wool boards they used to put in the dial knob you know the white ones that were there to clean the tracks as you turned the knob i can't remember what they called them but thats what i would use to help keep it clean.
@sethreign8103
11 ай бұрын
I would disassemble the potentiometer and bend the tiny pieces of metal to force them to make better contact.
@Hadadoh
11 ай бұрын
Buy high quality wire wound ones and replace the carbon ones.
@danielalin76
11 ай бұрын
Same strategy to fix the cam to the power supply: Hot Glue. :D
@Ateagno
11 ай бұрын
Insert a high value resistor under the potentiometer when it starts to lose conductivity!
@esbenarndt5703
5 ай бұрын
You should have a ultrasound cleaner for that use
@alexomar7464
11 ай бұрын
Thank You,
@Cire3PC
Жыл бұрын
Yup, hate getting rid of stuff I’m use to and like. Like anything else, fit it
@mahmoudajjan466
11 ай бұрын
Replace it with a non carbon one but with a copper one it's always better when it comes to changeable resisters Edit: thank GOD it worked better than ever and I'm glad that you showed us how to modify and *you working and fixing your own supplies not just the power supply* and i wish if you showed us your whole tools kit and thank anyways. Bye
@AttilaFarago
11 ай бұрын
Deoxit can help with this potentiometers
@Damilola14
4 ай бұрын
Hi Sorin, can you show us how to disable short circuit protection on linear power supply
@panaitepaul6798
11 ай бұрын
A drop of diesel works wonders. Clean and lubricate well.
@keithnsearle7393
11 ай бұрын
I would replace it to see if it were the problem or the circuit board.
@sparkiz7108
11 ай бұрын
have the same power supply problem with volatage regulation voltage jumping way to far when touch a little
@HectorLopez-jw2ke
11 ай бұрын
Hello. And old Shcooll leason use a 4b or 6b pencil and regraphthe surface with it just painting.
@NeverGiveUpYo
11 ай бұрын
Nice one Sorin!
@אליעמוס-ע8ס
5 ай бұрын
Hi, I would appreciate your help. I have something similar to this. I replaced all the potentiometers because they broke, and since then, instead of 5, it only reaches 4, and I replaced it according to the OAM that is written on it, what could be the problem
@ovidiuovidius
11 ай бұрын
Cu WD 40 rezolvai problema, nici nu trebuia desfăcut potențiometru...
@Junior_POA
11 ай бұрын
This same happened with my smd rework station
@skeggjoldgunnr3167
11 ай бұрын
I first wondered why Sorin is dicking around with an $80 China garbage bench power supply... Then I realized: class is in session
@ivandimov7090
11 ай бұрын
Sorin good morninh.Waithing a long time video like this a have same power supply and same issue😢😢
@robertwebb5586
11 ай бұрын
Sorin those are B10k 10K linear pots.
@irishguy200007
11 ай бұрын
Where is the solder comming from so fast onto the soldering iron?
@RBRetroBunker
11 ай бұрын
Electronic cleaner spray or deoxit works for me
@xbmc79
11 ай бұрын
Sometimes the connection between the pins and the poti-pcb give up
@seraph741
11 ай бұрын
Couldn't you put the metal cap back on?
@ishkhan2501
11 ай бұрын
Maybe The label made in England !!!
@bellslinki
11 ай бұрын
Thats dodgy 🤣🤣🤣
@williamrollinger3637
11 ай бұрын
After seeing the contacts at 12:39, I say replace it. Just make sure it's the same resistance.
@bomba6921
11 ай бұрын
Hi Sorin.I did order a linear one but i get a swiching power supply and what is the downside of it.I will upgrade the heatsink and add one on the bridgerectifier?
@mreaper2265
7 ай бұрын
before watching further i will say its the trimer pot.
@8500gtNvidia
11 ай бұрын
I would put back that metal casing on the potenciometer only for 1 reason....in case you are starting working and maybe you forget to check the amps, you can unleash 5amps on something by mistake ..meanwhile, if you reset by default the knob on the "Min" current position, you are sure to start from low amps
@alessandrozuin4614
11 ай бұрын
Hi. bps-805 is no more available. Any suggestion for a recent linear power supply to buy? thx a lot
@sabsab692008
11 ай бұрын
sorin be carful now it"s a dangerous power supply .cs from 0 amps u can go straight to 5 amps if u turn the wrong way. that could kill lot off components .u should change that potentiometer. good luck
@Dohcom1
Жыл бұрын
The wiper on the POT looked fine, did i notice the relay is not clicking also? I thnk the relay might be suspect?
@electronicsrepairschool
Жыл бұрын
The relays are clicking, otherwise it will not switch the voltage up and down
@Dohcom1
Жыл бұрын
@@electronicsrepairschool Ok, i could not hear, the relays are mechanical also, spring can get old or as another member mentioned the relay could "Arc", which could happen if Zener at the relay failed? I am just going on basics of what i know, am not at your level by any mean's, it must be a real puzzler then, thanks for reply Sorin
@electronicsrepairschool
Жыл бұрын
If will be a relay, i will have problem with less current also, but yeah, can be a faulty relay
@xkupi
4 ай бұрын
That is interesting made in England.
@user.fedorman
11 ай бұрын
My ad blocker off only for Sorin's channel 🙂
@rafarafa3094
11 ай бұрын
I stopped my UBlock Origin just for u :D. I dont watch tv because of adds, and using addon same reason.
@corel965
11 ай бұрын
The same problem im dealing last night sameee hahaha i cant believe it 😂😂😂
@ivandimov7090
11 ай бұрын
Please let me know you set"No short circuit protection " Shout hava or its defect your?Please let me know
@ultrashock3202
5 ай бұрын
Nivea's cute cream helps ols trick:)
@johnm4962
11 ай бұрын
Hey I have the same power supply why is there a capacitor across the earth and ground ?
@OctavMandru
11 ай бұрын
Made in England?? :) Maybe the sticker
@Fred-B
Жыл бұрын
Thank you for the video. Could you show us your USB-C/charging wiring in more details? I often wondered how you use your power supply to deliver the 19V through the USB-C.
@electronicsrepairschool
Жыл бұрын
Hi, if you check the video description, there is a amazon list and the charging port adapters are there. All i did is to cut down the usb-c end and use red and black wires and connect them to my power supply.
@jaym5938
11 ай бұрын
@@electronicsrepairschool Not in the description :)
@harryk377
11 ай бұрын
Deoxit
@izzzzzz6
11 ай бұрын
Us a load tester your burning up your tweezers.
@wartlme
11 ай бұрын
KZitem will not let you watch your videos if you use Brave for a web browser.
@jamesthomas2417
Жыл бұрын
Hi Sorin , Like the Idea of the large heat sink did you remove it for some sort of equipment regards Jim
@electronicsrepairschool
Жыл бұрын
I remember i bought large heat sinks from ebay on some point www.ebay.co.uk/sch/i.html?_nkw=large+heat+sink&_sop=12
@danielcotiga9854
11 ай бұрын
Inainte le reparam cu un creion cu mina moale 😅
@glazyrap9244
11 ай бұрын
btw i never used ad blocker, hate that programs coz low my pc, work like sht in background useless even i dont using yt
@matmar4758
11 ай бұрын
un model tot liniar dar complet digital ar fi bun
@spirotrifonov7101
11 ай бұрын
Replace them with new.
@ilanbinkovitch6054
11 ай бұрын
You should have WD40
@καΝενας-δ6λ
11 ай бұрын
my friend buy a contact cleaner spray please
@dreaso
11 ай бұрын
Hi Sorin. I have a similar PS, it's a 30V 10A one with the same housing and front plate. I've ordered it from china and when it arrived, i was'nt able to adjust the current at all. After opening the device, i could see that one pin of the big ribbon cable wasn't locked correctly into the connector... chinese stuff. 😂
@djtongi
11 ай бұрын
the poti is also held by the back plate to NOT wobble around... and you really have not even one test cable insead of using tweezers? sorin, sometimes i really do shake my head about your dodgyness...
@revolvingtoto007
11 ай бұрын
cheap chinese pots ,i replace them with Alps-Alpine made in japan
@lucataszarek8782
Жыл бұрын
Hello🤝👍👍👍👏👏👏👋👋👋👋
@milsiart4976
11 ай бұрын
Sorin just spray it with WD40.
@waynesallee-com
11 ай бұрын
I used WD40 on a pot once. It swelled the rubber resistor inside, causing it to be harder to turn, but then later became even easier to turn that originally, It worked good for a while, but eventually returned to the same problem. It seems that once pots start going bad, cleaning is just a temporary fix. Maybe what happens is that those rubber resisters start crumbling microscopic particles from the rubber getting old.
@MikheilGhvinianidze
3 ай бұрын
I was recommended zippo lighter fluid to clean potentiometers. I was told to just apply on them, and it will sock in, and clean it while you simple rotate it. I was sceptical because it is flammable liquid, but it had worked on many instances with no issues.
@tasoscyra2785
Жыл бұрын
Hi Sorin ! I have the same power supply. Potentiometers are very low quality. I had a similar issue in the voltage regulation . I clean potentiometers and work for a while . Better solution to replace all of them with high quality .
@VanDuc1126
11 ай бұрын
i have same issue with voltage, replace potentiometers but after few times on/off, issue comeback, can u sshare link order high quality potentiometers?
@Professorke
11 ай бұрын
It is indeed better to replace these trinkets with high quality potentiometers, then you will enjoy them for a lifetime. I always do this and it is not that expensive.
@VanDuc1126
11 ай бұрын
@@Professorkecan u share link to ỏder?
@waynesallee-com
11 ай бұрын
@@VanDuc1126 The system does not allow sharing.
@VanDuc1126
11 ай бұрын
@@waynesallee-comhow about keyword to search?
@andrewverran3498
10 ай бұрын
Please show us how to REMOVE THE SHORT PROTECTION ? Thanks Sorin. PeaceFromOz😊
@francklangelierfl
11 ай бұрын
DEOXIT DN5 is very good for contact cleaning
@ssikhcnerf
11 ай бұрын
Interesting how they mounted the heatsink and fan in what seems like the most inefficient way you could imagine... My Power supply has the heatsink mounted the other way outside the case and no fan needed, but it's from the 90s common sense was still a thing ;-) ...
@vinnyc7613
11 ай бұрын
sorin added the heatsink
@Drottninggatan2017
11 ай бұрын
You can get a bit more Amps when you remove the stop, so the potentiometer turns a bit more. But is it good to have the wipers go out over the metal? Maybe the wipers will be damaged and then the carbon tracks will be damaged as well? Maybe?
@q12x
2 күн бұрын
Ideal e sa skimbi acel POT de 2K cu unul nou. Dar daca tot il tii pe ala vechi, eu sugerez sa lipesti cu prelandez ori cu superglue o bucatica mica de chibrit pe locul unde era stopul de pe carcasa de metal care ai scos-o. O lipesti de textolit, direct pe pinul din mijloc. Crede-ma o sa tina ok si o sa fie ca inainte. Ia si incearca si o sa-mi multumesti dupa.
@Agent24Electronics
11 ай бұрын
Nice fix but I wouldn't recommend you use it like that where it can turn around freely... if you have it set to a very low current to protect your circuit, and accidentally slip or go a little further, suddenly you get the full 5 amps into whatever you have connected... I agree with other commenters, the potentiometer is probably worn out from a lot of use, better to replace it with a higher quality one.
@Roottech25
11 ай бұрын
how is it possible that you are probably around 50 years old and you don't need prescription glasses?... for how long have you work in electronics?
@Evhen_Velikiy
11 ай бұрын
Маю такий самий блок живлення 1 в 1. мій виготовлений в КНР.
@andrewverran3498
11 ай бұрын
Did you ever do the removal/bypass of the SHORT CIRCUIT PROTECTION of a power supply? ✌️
@Trex0Pol
11 ай бұрын
A little bit of WD40 should do the trick. I used it for potentiometer and it works just fine now.
@victimovtalent6036
11 ай бұрын
carbon strip can dissolve
@andrewverran3498
11 ай бұрын
@victimovtalent6036 yep ..best just to use isoprop.
@ruben_balea
11 ай бұрын
I've a couple MLINK DPS3005 (same as KORAD KD3005D and RS RS3005D but much cheaper) and those use two rotary encoders and the settings can be locked. I bought them 4 years ago for €40 each, now they cost €60.50 in Spain... I've no idea if those are available in other countries. Note: The MLINK DPS3005 It's not the same as the generic DPS3005 buck converter module with LCD screen or DPS3005 power supplies from another manufacturers that are the same as the one in this video.
@oilybrakes
11 ай бұрын
I have a power supply where I've cut the fan wire and connected a bimetal switch set to around 50°C in between. The switch is now sitting between the fins of the worst ventilated part's heatsink. And so... when the hottest part gets warm, only then does the fan get power. When I am just messing around, everything is silent. When I charge batteries I don't have to think about turning on the fan. It just happens.
@prajjwalkarki1426
11 ай бұрын
I have same one with other name. I am just learing to use it. I am seeing ur videos all these days and thought the power supply u were using was connected to some hdmi video digitally showing on video. Hope you some day give knowledge to use this power supply in basic too.
@esbenarndt5703
5 ай бұрын
Maybe you should get rite of those cheap potentiometers and replace them with some better standard
@filda2005
11 ай бұрын
Today we have a niiiiiiiice lap, wait a moment, niiiiice power supply XDXD
@boardfix9374
11 ай бұрын
hi old school man just buy a bunch of potentionmeter! very cheap😅
@28KKaann
11 ай бұрын
Link xour other channel pls. Its xalled lapto repairs i think.
@SkittlesWrap
11 ай бұрын
Inception right here lol
@REVERSE_BIAS
6 ай бұрын
"Proper nice mate!" 😂
@noslidemais
11 ай бұрын
@Pirelli.
11 ай бұрын
12:25 Sounds like it comes from PC, cell phone...manufacturers, but with Sorin everything gets a longer life. In this way we also protect the climate a little!
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