ut-norm
Senior Member
Last Activity: 04-17-2025, 01:28 PM
Joined: 11-21-2019
Location: roma
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Headphones SHURE AONIC 50
Hi, I have these AONIC 50 headphones that no longer connect. They have been unused for about 2 years. The battery has been replaced and when turned on the LED only flashes blue continuously. Connected to the power supply they recharge. Connected to the PC you can hear the recognition signal but they are not recognized by the Shure Update Utility program (they do not connect) that I downloaded to try to install the firmware. I do not know how to proceed. It is a good product, even if expensive, that I would not like to put aside. It is out of warranty, unfortunately. Do you have any ideas on how... -
ps4 power supply
Hi, I need to replace the power supply of a PS4 mod. N14-240P1A that isn't working. I found one mod. ADP-240AR AA from a PS4 fat. I'd like to try replacing them by inverting the pins of the connector that goes to the motherboard, the first has 4 pins, the second 5, but that's not the problem, they can be adapted. Only the N14-240P1A has the first pin marked ACIN_DET where 4.7v are present. The ADP-240AR AA doesn't. To enable the 12v on the N14 -240P1A, short-circuit the ACIN_DET pin with ACDC_STBY, while on the ADP-240 AR, short-circuit ACDC_STBY with the 5 volts SB. I don't know if these two... -
Hi, I have this HP NVIDIA QUADRO M 4000 8GB DDR5 graphics card. Is it suitable for gaming? Thanks for the reply CPU: I3 8300- Ram 16 Gb DDR5-ATX 650 W -
Nvidia Quadro M 4000
Ciao, ho questa scheda grafica HP NVIDIA QUADRO M 4000 da 8 GB DDR5. È adatta per i giochi? Grazie per la risposta CPU: I3 8300- Ram 16 Gb DDR5-ATX 650 W -
Smart book MEDIACOM M-SBE 142
Hi, I have this laptop that has a short circuit on the 5V battery charger power line. Do you know where I can find the wiring diagram? Thanks for your help...
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Thanks mon2 I found the solution by reading the post.I programmed the chip with the CH 341A but without the 1.8v adapter.It didn't work with EZP 2019.The CH 341A recognized the chip as GD25Q64 powered at 2.98 v. voltage measured on pins 4 and 8. The PC with the new bios began to charge the battery and started up. Thanks again...Leave a comment:
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Programming chip 25LB64CSIG
Greetings to all. I need to flash the bios of an ASUS x509M. I have two CH341A and EZP 2019+ programmers that do not recognize the chip which is: Gigadevice 25LB64CSIG (I have the adapter for 1.8 v.). How could I do? Can I use another programmer or perhaps an equivalent chip? -
Re: Chip identification
Thanks very kindLeave a comment:
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Chip identification
Greetings to everyone. I can't identify the chip depicted in the drawing. It is used in the HOYOA 9.6-24 v battery charger. mod.
HYCH0402701500G.Does anyone know him?
Sorry for the terrible drawing. Thanks... -
Re: alimentatore LITE-ON
I short-circuited the green pin to ground but nothing happens. There is no voltage on the connector pins. After opening it (I attach a photo) I found no voltage in the secondary area. The only voltage is 330 V. it is on the primary cond. of 120 mf 400 v. I did a summary check of the mosfets which seem good. On the primary there is an LTA1605B chip for which I have not found the datasheet. On the secondary there is a vertical board mounted with a SY 1202 chip for which I have not found the datasheet and two Lm 358. In no part of the circuit, both above and...Leave a comment:
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alimentatore LITE-ON PA-1181-3HA
Hi, I have a Lite-On power supply mod.PA-1181-3HA that I would like to turn on to test it but I don't know the procedure. I attach the photo of the connectors.
The small connector connected to the circuit has 5 wires: 2 black connected to ground, the others, purple, gray and green.
Thanks for your help... -
Asus x509m
Hi I need the wiring diagram of this laptop: ASUS X509M-BRT. I can't find it.
Do you know where it's definitely possible to download it?
Thank you.
main board...Last edited by piernov; 08-05-2023, 05:22 AM. -
Re: Acer extensa ex 2540 Laptop display replacement
Thank youLeave a comment:
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Acer extensa ex 2540 Laptop display replacement
hi all, I need to replace the display on an Acer extensa ex 2540 laptop. I found a used display of the same format that has the same 30-pin connector but of a different brand. I am attaching photos for greater clarity. The first BOE is the broken one on according to PANDA it is the substitute.
Do you know if they are compatible? I would like to be sure before replacing them.
Thank you...Last edited by SMDFlea; 07-03-2023, 01:51 PM. Reason: Added "Acer extensa ex 2540" to thread title !!! -
Re: ACER ex 2540
In practice you have to program the empty chip with the bios file. I have an EZP 2019 programmer for 24 25 26 93 series chips, I don't think it is suitable for this.Are there no adapters?Leave a comment:
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Re: ACER ex 2540
Ok thanks. Unfortunately I'm not able to program this chip, I don't have a programmer and I don't know what to put in it. I'll have to buy it already programmed. The laptop won't turn on or charge.
Thank you for the prompt reply.Leave a comment:
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ACER ex 2540
Greetings to all. I have a laptop ACER ex 2540 extensa motherboard B5W11 LA-E061P whose KB9022Q D chip literally went up in smoke. Is it a programmed chip?
Thank you for the answer. -
Driver brushless motor
Hi everyone, I have a brushless motor, of which I am attaching a photo mounted on a DEWALT battery saw that has a faulty controller driver but with the windings ok. I would like to feed it with another controller driver (after having obviously removed the broken one mounted on the base of the motor ) but I don't have clear ideas about it. I've seen many controllers on Aliexpress but I don't know which one to get. It should have a locking system like the original one in case of engine jam.
Can you help me?
Hello everybody.... -
Re: transistor ON 724 PHILIPS
Thank you for your prompt replies. The ON724 is mounted in an old oil burner control board that works well. Unfortunately, I no longer have that board. I'll see if I can post a photo. I just wanted to know the features of this component not having found the datasheet. The electronics of this card are very dated. In addition to the ON724 there is another transistor but in a TO5 container that starts with ON but I don't remember the rest of the initials.
I found this link on the net
[url]https://www.jotrin.com/product/parts/ON72...Leave a comment:
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Re: transistor ON 724 PHILIPS
The title is wrong, the marking is:ON 724
I apologize for the mistakeLeave a comment:
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