I want to stock up on some SMD resistors and I know to match the Ohm ratings but what wattage should I get. I also see there numbers like "2712"..."0705"....."0402" ...Thx
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Re: SMD resistors for repairing LG ysus and zsus boards
A quick google search would get you this
http://www.resistorguide.com/resisto...-and-packages/ -
Re: SMD resistors for repairing LG ysus and zsus boards
You can never go wrong with a higher wattage. As long as it fits on the pads.Comment
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Re: SMD resistors for repairing LG ysus and zsus boards
This is the physical size (length and width), it is related to power dissipation rating as the larger resistors have more surface area. But because your doing repair, you need to buy the size that matches the footprint on the circuit board.
edit: You can also buy resistor kits, which contain all the common values.Last edited by sean0118; 04-15-2018, 12:30 AM.Comment
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Re: SMD resistors for repairing LG ysus and zsus boards
maybe something like this
https://www.aliexpress.com/item/Smd-...ceBeautifyAB=0Comment
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Re: SMD resistors for repairing LG ysus and zsus boards
Can you post pictures of the SMT components you want to replace? eBay maybe cheaper than aliexpress.-Thomas
I'm a hardware engineer focused on networking equipment for my day job. I void warranties and fix consumer electronics for fun.Comment
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Re: SMD resistors for repairing LG ysus and zsus boards
just use normal resistorsComment
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Re: SMD resistors for repairing LG ysus and zsus boards
See and try if you can get the service manual or part list and then you can verify each component.Comment
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Re: SMD resistors for repairing LG ysus and zsus boards
Thanks for all the replies, I ordered a couple assorted kits from E-Bay.Comment
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I have three identical-spec 820-01700 boards (2.6/32/512), and ALL THREE boards came to us with the same fault, from different sources: The boards don't wake from hibernation with the keyboard or lid, they ONLY wake when you press the power button. I understand this is a very minor issue, but the boards must be fixed!
We will of course begin with the obvious (checking lid signals), but I couldn't help but notice these three boards were all 32GB variants. Has anyone noticed an issue relating to these 32GB boards in particular? I of course don't think it's a RAM issue, but it's bizarre... -
Sorry if this is too repetitive, or in the wrong place.
I'm new, and having much the same problem. My LG50PA5500 TV has been working flawlessly since new. The other day, while in the midst of watching a broadcast DTV channel, the entire screen suddenly and silently went dark (no snaps, crackles or pops); sound, channel selection and inputs all work OK.
I have checked connections and voltages from: stdby, pwr supply board fuses, psb output voltages to Zsus board and its fuse, output voltages from Zsus to Ysus and its fuse. All precisely normal!! I've also checked voltages to the...06-19-2021, 06:36 PM -
Hey everyone,
I'm currently working on a mid-70s Sharp Electronic Digital Clock Radio, Model FY-70CH. I found the service manual online, printed it out, and have been studying it for a while. My main reasons for tackling this are: (1) I want to learn electronics and figured I'd start with something I had on hand, and (2) I want to fix its issues. Right now, the radio sounds awful, has about 5V DC at the speaker terminals, and the alarm time setting doesn't work. But I'm not asking how to fix these problems.
Instead, here's what's been bugging me so far:
The schematic... -
We've now created a stack of 10 boards that have the same issue, which we suspect to be CPU-related. The issue is very simple--the board will not boot to anything, only showing the exclamatory sign inside a circle. No amount of DFU/restore, wipe/erase, etc, will resolve the issue. No boards have physical damage. We went ahead and replaced the SSD nands on two boards (one 02020, one 02016) and the issue remained exactly the same. We are considering replacing the CPU on one of the boards using a locked CPU, just so we can see if it resolves the issue.
Has anyone else run into this... -
I'm looking to upgrade several 8GB 820-00850 boards to 16GB or 32GB for personal use. I am curious what the best practice and process is for sourcing new replacement chips, and what vendor(s) you guys prefer? Another question is, how do I find compatible chips and their corresponding part/model numbers? For example, in the 820-00850 schematic, the DDR chip U2600 model listed (EDFB232A1MA) corresponds to 1x32GB chip. Of course, I would need 4x8GB chips to replace the 4x2GB chips currently on the board. How do I find compatible 8GB chips? Is it as simple as searching "BGA178 8GB 2133"...
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