changed 200m to 2m.
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I made a mistake on pic above. Its not 200M its 2M. But overall it fits.
btw I cant find what is red-red-gold-gold-white. We need some1 to explain.
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This is a big help. I'm away from it until Monday, but I'll answer the questions I can remember.
To optoc? Yes
20 oh? Bands on resistor are red-red-gold-gold-white. Which I think means 2.2ohm. (see picture)
Source to gnd? I don't think so. I checked for shorts, and I think source wasn't connected to ground.Attached FilesLeave a comment:
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I don't know will it help or not.
This is from CM6502UHH PFC controller typical application circuit and it has TNY227P.
Resistor is 2M (r45 + r46). On your photo something is behind.
My wild guess it is sort of hz15-2. Enable pin should be connected to optocoupler.
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Have you ruled out that it isn't TVS diode P6KE150A (VR1) or Zener diode 1N5254 (VR2) from the example schematic you posted? (By studying the actual circuit closer/drawing it up more it should be "easy" to see).Leave a comment:
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Corsair RM1000e - Help identify 5VSB Zener diode
Hey there guys. I've got a Corsair power supply that's come across my bench dead. I usually don't mess with power supplies, but it's a slow week so I'm giving it a whirl.
Taking it apart I heard a screw rattling around inside, and when I got it apart I found a couple blown components near what I think is the 5VSB area.
There's a 22ohm resistor that's melted and open, but it still has the bands.
The other part is a zener diode and it's top went to jesus, so I can't read the marking.
It looks like the diode connects the source and drain of a TNY284 through a couple of 2M resistors and a transformer winding.
Does anyone know what a good value for this zener would be, and what it might be doing?
Any help much appreciated!
TNY284 Datasheet: https://www.mouser.com/datasheet/2/3...et-1511375.pdf
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Hello everyone, I'm repairing an LG TV backlight and I noticed some strange behavior when I touching the backlight strip with a missing Zener diode.
So I replaced the leds on the strips and they seemingly working fine, but soon as I touch the strip which has a missing Zener diode the whole backlight turns off for a few seconds and then turns back on.
Is this caused by the missing diode? If so what kind of zener diode should I use to replace it?.
The led strips has 9 6V leds.
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I have bought this Zener Diode for this project what size and wattage resistor value do I need to use to get near 50 watt output
I bought this from an eBay seller but unfortunately they only had one
I bought three from Vetco Electronics these are Sylvania ECG5185A 9.1@10w A to Stud what size and watt resistor do I need to use to get near 10 watt output
I bought three of from them to also make battery packs with this output power limit in mind
I want to use this battery pack and turn it into a 9.1 output battery pack output to eliminate using 9 volt battery... -
Hi, I'm looking for a bit of help trying to fix the audio unit from a Maestro Mayhem 4.1 gaming chair please.
The chair has a few speakers and vibration motors. All was well, for a while, but now the sound is gone.
It may be significant that I discovered my son was powering it with a 19V laptop charger when it should run on 12V - it did fully work, for bit.
I think an issue could be a zener diode (or capacitor) which has shorted out.
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My Element 32 inches tv (ELEFW328B) lost it's backlight (confirmed with a flashlight test) and the connector on the PCB (it has one board that has a processor chip, switch mode power supply, and backlight circuit) that has the two wires that go to the backlight LED strips has a very low voltage (28-29 volts) when turned ON, in my opinion.
Started testing components and found an SMD diode or zener that is shorted (even zero fusing resistors read a few tens of milliohms, while this thing reads zero).
I put some pictures here to show that it is labeled "M7".... -
Hello,
im actually trying to save a d1500 delay from yamaha. I found the service manual but schematic is missing and BOM list is a bit unclear as components listed have no reference linked to the pcbs... In my case, one zener diode was broken (114 code on the pcb in attached file) and couldn't be repaired : it was a zener type package. In the BOM list i found 3 reference on this board : 1S555 (can be replaced by 1N4148), RD4.7EB2 (approx 5v rectifier), RD7.5EB3 (approx 7v rectifier)...
Actually the cathode goes to VCC of sram M5M5118P, without this diode missing, i have...
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