Thank you for your reply. Yes, I do have a milliohm meter and Kelvin probes (4 wire probes) that eliminate the need to measure wires resistance. I am pretty experienced electronics repairer (8 years) but modern graphics cards are NOT my usual repair devices. That is why I asked a SPECIFIC question, hoping for a SPECIFIC answer from somebody, who knows.
A tak poza tym, gdybyś przeczytał uważnie mój post, dowiedziałbyś się, że byłem w stania zmierzyć 67,9 miliohms, więc muszę mieć możliwość dokładnego pomiaru tak małych oporności. Ale dzięki za odpowiedź - i tak...
AllElectronicsRepairs
Member
Last Activity: 02-23-2025, 04:13 PM
Joined: 02-27-2020
Location: Buderim, Queensland
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Resistances of V-Core and V-RAM for AMD Radeon RX 6900 XT
Hi Guys, what should be the resistances to Ground of V-Core channels and V-RAM for AMD Radeon RX 6900 XT? Is 67.9 mOhm for V-Core OK? I am trying to diagnose this Graphics Card and check for any shorts first. Like none of the power rails seem to be shorted, but I want to make sure before injecting any (low) voltage to see if any component raises its hand... Kind regards, Jerry.. -
Sorry, my mistake! it should be [B]CG[U]32[/U]13QIR-00 [/B]not CG[U]23[/U]13QIR-00Sorry, my mistake! it should be [B]CG[U]32[/U]13QIR-00 [/B]not CG[U]23[/U]13QIR-00Sorry, my mistake! it should be [B]CG[U]32[/U]13QIR-00 [/B]not CG[U]23[/U]13QIR-00Sorry, my mistake! it should be [B]CG[U]32[/U]13QIR-00 [/B]not CG[U]23[/U]13QIR-00Sorry, my mistake! it should be [B]CG[U]32[/U]13QIR-00 [/B]not CG[U]23[/U]13QIR-00Sorry, my mistake! it should be [B]CG[U]32[/U]13QIR-00 [/B]not CG[U]23[/U]13QIR-00Sorry, my mistake! it should be [B]CG[U]32[/U]13QIR-00 [/B]not CG[U]23[/U]13QIR-00Leave a comment:
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Pinouts for CG2313QIR-00, CG3215QIR-00 and 88E6020-NNC2
Would somebody PLEASE have pinout for any of these 3 chips: Sigma Designs (Coppergate) [B]CG2313QIR-00 (QFN-64) [/B]and [B]CG3215QIR-00[/B][B] (QFN-128),[/B] as well as Marvell [B]88E6020-NNC2 (QFN-64)[/B]? I tried everywhere I could think of on the internet without success. You can buy them alright, although not at any of the major distributors - mostly eBay, but I can't find any datasheets or at least pinouts. How one is supposed to design anything without such a basic information like chip pinout? Not even mentioning any more detailed properties... These integrated circuits are used in EOP... -
ALDE 3kW ignition transformer
Hi Everybody! I am desperate to obtain from somewhere an ALDE 3kW ignition transformer for 3010 module. It could be even a damaged (burned, cracked, corroded, etc.) board with good transformer on it. PLEASE HELP!...
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Thank you for your fast answer! Since I posted my question, I tested them further and discovered that indeed, they show as 2 capacitors with common ground in each package, both reading on the capacitor tester as 5 nF each end. I learned something new today
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Unrecognized component marked on the board as capacitor
Hi All,
I have 2 unknown (to me) components on the board - one designated as C1 the other as C160, suggesting that they are capacitors. See pictures. I have never seen capacitors like that. Both of them are shorted, none of them has any markings. The board comes from a commercial (heavy road planning equipment) GPS unit. If they are capacitors, they shouldn't be shorted, suggesting that they are faulty. Have no idea about their value. They both have something that appears as 2 blue bands. Any help will be enormously appreciated. -
SMD Diode marked (?) E27 NMC
I have DRUCK UPS-III-IS Loop Calibrator to repair, and I found one faulty diode (O.L. both ways, even out of the circuit). The SMD code on it is [B]E27 NMC[/B]. by ON Semi. I can't find anywhere on the internet what kind of diode it is. Being the calibrator, all elements may be crucial, to be exact, so I really don't want to mess up with any diode there. Especially if it needs to be Shottky or a particular Zener. It is connected between a Poly capacitor and in series with another (different) diode ([B]MX47A[/B]) - pictures attached.I have DRUCK UPS-III-IS Loop Calibrator to repair, and I found... -
Re: Possibly Zener diode identification
Sorry Guys, you are right. I should have posted some pictures. The circuit board is a part of the Caterpillar in-cabin control display (a bunch of alarm lights and displays). Board number [B]CAT 106-1154[/B]. Pictures attached. The diode's very bad quality (dark) photos are due to the barely readable markings, so I had to play with lighting under the microscope to show anything.Re: Possibly Zener diode identification
Sorry Guys, you are right. I should have posted some pictures. The circuit board is a part of the Caterpillar...Leave a comment:
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Possibly Zener diode identification
Hi Everyone. I have a shorted diode marked [B]15A 435[/B]. It's most likely a Zener since it was connected with the anode to the ground. I tried to find its reverse voltage value on the internet without success. Can anybody help?Hi Everyone. I have a shorted diode marked [B]15A 435[/B]. It's most likely a Zener since it was connected with the anode to the ground. I tried to find its reverse voltage value on the internet without success. Can anybody help?Hi Everyone. I have a shorted diode marked [B]15A 435[/B]. It's most likely a Zener since it was connected with the anode to the ground. I tried -
HELP! dbTechnologies B-Hype 15 Speaker
Hi Everyone!
Does anybody have a schematic for the Power Supply board for dbTechnologies B-Hype 15 Speaker? The IC "U1" is blown beyond recognition (see picture), so maybe just the chip code? Board E356428 SY-JLH -02. PLEASE!... -
Wat is this component?
Hi Everyone!
The SMD code is [B]AB5IB[/B]. It's a SOT-23 component (or similar).
I tried to decode this component on every site I could find (SMD Code Book, etc.) with no success.
Does anybody know what this component is? I have 2 of them on the board, and both give the same readings. I used DMM, as well as PEAK Atlas DCA75 Pro Advanced Semiconductor Component Analyser.
Atlas says that [B]NO COMPONENT IS DETECTED[/B] (both of them). Usually, it can detect ALL types of transistors, including Darlingtons, MOSFET, BJT, JFET, etc., Volt Regs, Diodes,... -
Re: What is this component? No markings whatsoever.
It's an Earth Bore pointer....Leave a comment:
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What is this component? No markings whatsoever.
Hi All,
Could anybody please recognize this component? It has no markings and there is no designator on the board. It has no continuity, diode test shows also OL both ways.... -
Can you recognize this chip?
Hi Everybody.
I have a self-darkening visor/shield from a 3m Speedglas 9100XX Adflo Welding Helmet with 1 component reporting short on the circuit board. I can't find any data on this component - see the picture.
Can anybody kick me in the right direction? PLEASE!...Last edited by AllElectronicsRepairs; 05-13-2022, 08:49 PM. -
Re: New Members - please post your introductions here
Hello All!
My name is Jerry, I was born in Poland and live now in Australia on Sunshine Coast. I am an Architectural Designer by trade but electronics has been my hobby for many years. Last year was absolutely horrible here in regards to architectural work, so I decided to turn my passion into a side business - with a possibility for it to become my main activity. And [b]All Electronics Repairs[/b] was born. My Clientele base is growing steadily, as apparently I am the only one providing this service locally
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