I'm looking into building a repair kit to keep on hand while learning how to troubleshoot TV issues. So far, the 20 or so 1000uF 35v caps I bought have come in handy, but what about diodes and MOSFETs? What do you suggest I should have on hand?
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Re: Parts: What do you keep on hand?
I have a tonne of shit, all ordered though in bags from what I had previously used for repairs also a load of caps with common values. In my other bags got mosfets, diodes, leds, resistors everything. Then a lot of Tv boards.Please Do Not PM My Page Asking For Help Badcaps Is The Place For Advise, Page Linked For Business Reasons Only. Anyone Doing So Will Be Banned Instantly !
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Re: Parts: What do you keep on hand?
I just order a few extra components each time so a stock builds up. Plus a number of unrepairable circuit boards at hand.Willing to help but I'm no expert.Comment
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Re: Parts: What do you keep on hand?
What are some common values of diodes and MOSFETs that I should keep on hand?Comment
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Re: Parts: What do you keep on hand?
uf4007's are handy
and mbr5200 - but hard to find.Comment
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Re: Parts: What do you keep on hand?
It's probably unrealistic to stock any common value of mosfets, since each manufacturer has their own supplier(s) and there are a LOT of suppliers. Therefore, there are many different part numbers used. If you've had a chance to look at power supply schematics, you would see that many of the mosfets used are not used on any other supply. It's almost like the manufacturer's go out of their way to use a new part number every time they design a new supply.Comment
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Re: Parts: What do you keep on hand?
The variety of parts does make it difficult to know what to stock and holding stock can be expensive.
I ordered Mosfets for a Samsung Ysus set the other day from Italy and received them in 36 hours. Better than our First Class local postal service.Willing to help but I'm no expert.Comment
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Re: Parts: What do you keep on hand?
1/4 watt resistors of every imaginable value, 1000uf 470uf 2200uf caps in 25v and 35v, zener diode kits in 1/4 watt, 1/2 watt and 1 watt, 1n4148 diodes, 1n4007 diodes, fuses in several values. Then when I order parts for a specific set I usually order several extras of each thing. Some models have the same failures on every set (like the 98$ emerson from walmart) I usually get enough to fix 5 before I have to reorder parts. Plus something on the order of 100 broken screen sets i have accumulated.Liberating magic smoke one part at a timeComment
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Re: Parts: What do you keep on hand?
It is okay to look at ebay auctions to get a clue/hint of what the repair kits includes as it might point out the most often failed part, but since you live in the USA, I suggest avoiding ebay for your parts as they are likely to be counterfeit or questionable quality.
I would also take the feedback left for sellers with a huge grain of salt. Most DIY people can't tell the difference between a fake and genuine and most don't know the difference between a general purpose cap and low ESR cap.
You have reasonable shipping costs with reputable distributors like digikey and mouser and usually get the parts in 48 hours, just to name two.Last edited by retiredcaps; 06-07-2016, 05:53 PM.--- begin sig file ---
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Re: Parts: What do you keep on hand?
13N50 are something I use a lot of.
Used in loads of samsung and VESTEL power supplies.
Also a handy sub for 9n50 and 11n50.Comment
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Dear members,
I have a linear variable power supply with unknown brand name that I used for voltage injection.
Then it failed. I discovered that its transistors (Q1 and Q2) are shorted.
In addition, I discovered that its zener diodes are defective.
I can replace the burned transistors.
But I do not know the model of the zener diodes. the model number is not marked on the zener diodes.
Therefore, I cannot replace the zener diodes.
I do not want to test the zener diodes in a test circuit to discover their model or value.
no schematics are available... -
The TV is a Samsung UN65JU67ODFXZA Version TD01. I replaced the power source board and the TV is now working, but I decided to try and troubleshoot the old board to fix at the component level. Trying to get a schematic and a parts list has proven to be an issue. Trying on my own, I can't tell you how many times my Norton security has flagged sites as "malicious". I ordered a service manual from ServiceManuals.net, paid $16.99 and got 66 pages of everything BUT schematics and component parts list! Can anyone steer me in the right direction? Some of the surface mounted component parts... -
Good day folks......wow this new layout is weird. It's like I woke up one day and I'm no longer on Planet Earth or something
Anyway....got this here power brick from a USB to SATA adapter which keeps blowing the fuse after I almost repaired it. The reason I even bother to fix a power brick (wall wart, whatever) in the first place is because this thing was really convenient to use: I'd just plug it and that's it. It's a dual output supply, for both 12v and 5v, which although I COULD easily obtain with a DC-DC converter from a standard 12v adapter, I thought I should crack open the... -
- g´day! I have a samsung 22" tv monitor to fix. power supply model bn44-00505A. some stuff blown up on the primary, according to research something typical on this model. secondary seems ok. writings on the board say in outputs a5v (standby), b5v (switched) both on the lower 3 diodes on the picture, vamp and b13v (12.8v, both are the linked at the connector that goes to the main board) my question is, are both the upper diodes for 13v? I believe so but wanted to make sure before injecting voltage there to test. I injected 5v on the lower side and standby circuit is working fine
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12-18-2023, 05:45 AM - g´day! I have a samsung 22" tv monitor to fix. power supply model bn44-00505A. some stuff blown up on the primary, according to research something typical on this model. secondary seems ok. writings on the board say in outputs a5v (standby), b5v (switched) both on the lower 3 diodes on the picture, vamp and b13v (12.8v, both are the linked at the connector that goes to the main board) my question is, are both the upper diodes for 13v? I believe so but wanted to make sure before injecting voltage there to test. I injected 5v on the lower side and standby circuit is working fine
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Hi folks. As the title says, I was doing a port replacement on a Lenovo Thinkpad T480s and in the process of post-solder cleaning, I somehow knocked off 2 or 3 diodes (i think they are diodes) near the main usb-c. I can't seem to find what kind of a diode is that. I know it's ultra tiny and just has a letter "G" on it. Would someone maybe have a proper schematic for the t480s model? I can only find the non-s one and it's quite different to the "s". Would love to figure out what component that is.
Thanks in advance!...
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