asus p4G533-LA / HP echo4 question

[pearl23jam]

what was the problem and how did you resolve it because i have the exact same problem ,but i dont even get as far as you, i just get beeps?? could you help me out?

[irv6744]

what was the problem and how did you resolve it because i have the exact same problem ,but i dont even get as far as you, i just get beeps?? could you help me out?

i haven't played with the board since i asked about it. another guy wrote me and had the same problem. never did hear back from him. sounds like these boards go bad the same way and no one knows what to do with them other than return or throw away.

[Garak]

i haven't played with the board since i asked about it. another guy wrote me and had the same problem. never did hear back from him. sounds like these boards go bad the same way and no one knows what to do with them other than return or throw away.

I had a 533 mobo that appeared to have the same prolem, but once I disabled the onlboard "talking to you" controller on the motherboard (with the assisatnace of 3 jumpers. all was well.

[irv6744]

I had a 533 mobo that appeared to have the same prolem, but once I disabled the onlboard "talking to you" controller on the motherboard (with the assisatnace of 3 jumpers. all was well.

unfortunately, my 1.02 version of the motherboard has no jumpers on it so i cannot take a hardware approach to disabling the sound. i cannot get into the bios setup because it freezes up too fast after power on.

[keltix]

omg, someone else had this problem TOO, i have an hp pavillion a424x, same tone, freeze at intel p4 welcome screen. How did you end up fixing it???

[melinko7903]

im having the same problem but with out the constant beep.the way i fixed it was said f@ck it and bought a new case/ps and all.and now it works fine...BUT i cannot hook up my firewire/usb1.1/usb2.2 or my mic and sound.i know i can get a passthrough cable for the sound and mic but help with the othere? and mine has NO AGP!!!!!! does anyone have an AGP port on this mobo???if anyone can help me PLEASE e-mail me at [email protected] PLEASE HELP ME i want to play guild wars and ive only got onboard video and i hear PCI cards suck @ss....if you know bout the firewire/usb please share you inferiour knowledge...thanx

p.s the mobo is a ASUS- P4G533-LA from a hp.now in a diabolic minitor case....very smooth.

[Lex-]

Hi, this motherboard (Asus P4G533-LA) uses SMD transistors to control the VCC line (+5 volts) of some ports like USB, PS/2 keyboard/mouse, when this line is overcharged or short-circuited due a damaged hardware (keyboard, mouse, printer) connected to one of these ports then the transistor that control or switches this port become damaged, causing that the motherboard can´t "turn-on" USB and PS/2 ports (the motherboard can´t put +5v on these ports), you can verify it seeing that the leds on the keyboard stay off when you turn on the computer...

To repair these motherboards you need to know about electronics specially about SMD, because you need to locate the SMD transitor short-circuited and replace it, I know 3 ways to do this repair:

- Full repair: locate damaged transitor and repace it.

- Partial repair: if yoy can´t obtain a replacement transitor then simply remove it, but the port associated to this transitor will not work anymore.

- Partial repair (improved), you can simply remove the damaged transistor and put a jumper like a SMD cero ohm resistor between collector and emmiter pads on PCB of course, with this "jumper" the port and the motherboard will work without a problem.

Note: The Asus P4G533-LA have 3 of these SMD transistors marked as Q11 (at the back of PS/2 keyboard/mouse port), Q12 (at the back of RJ-45 LAN/ USB ports) and Q21 (near to the USB front panel header). I recommend that you first check Q12, but all 3 can cause these simptoms described by irv6744.

I hope this helps, please post some feedback to know if this procedure helps someone.

Thanks.


Hola tu computadora trae el motherboard Asus P4G533-LA, este modelo de motherboard usa transistores SMD para "accionar" los puertos USB y PS/2 (teclado y mouse), estos transistores funcionan como switches o interruptores que conectan la alimentacion o linea de voltaje de 5 volts de estos puertos, el problema que describes ocurre cuando esta linea de alimentacion se sobrecarga o entra en cortocircuito debido a que algun periferico que conectas a alguno de estos puertos causa este cortocircuito o sobrecarga provocando que el transistor que conmuta esa linea de voltaje se queme, puedes notar si este es el problema verificando que no le llega voltaje al teclado ni al mouse ni a ninguno de los USB (lo cual puedes verificar observando que los leds del teclado no encienden al momento de encender la computadora)...

Para repararla necesitas tener conocimientos y habilidades para trabajar con componentes SMD ya que la solucion es encontrar el transitor que esta en cortocircuito y reemplazarlo, hay 3 formas de "repararla" las cuales son:

- Reparacion total: consiste en conseguir el transistor y reemplazarlo.

- Reparacion parcial: consiste en quitar el transistor que esta causando el problema, esto hace que tu motherboard vuelva a funcionar pero el puerto al que va conectado el transistor dejara de funcionar.

- Reparacion parcial mejorada: en caso de no poder conseguir el transistor puedes colocar en su lugar una resistencia SMD de cero ohms (jumper o puente) entre lo que es el emisor y colector, de esta manera el puerto al que va conectado este transistor seguira funcionando sin problema.

Si vives en Mexico puedo ofrecerte el servicio de reparacion de tu motherboard.

Nota: En este modelo de motherboard (P4G533-LA) he identificado 3 de estos transistores marcados como Q11 (atras del conector de teclado y mouse), Q12 (atras del conector de red RJ-45 con 2 usb) y Q21 (a un lado del conector para los USB frontales). Te sugiero que revises primero Q12 ya que es el que yo he visto quemado en las reparaciones que he hecho pero los 3 transitores pueden causar este problema... Saludos.