W
worst-programmer
- Jan 1, 1970
- 0
Hi al,
I have trouble with my graphics card, it doesn't start at first time. For
example when I turn on a computer I don't see picture at a monitor (black
screen, and green light in the monitor) but when I turn off the computer and
turn on once more then it's working fine.
If I will turn on the computer about 1-2 min. after turn off, it's not working
again.
[Informations]
Graphics card: GV-85000A-000 (RADEON 8500 powered by ATI)
RAM: 64 MB (128bit) (Samsung DDR 4ns)
Frequency: 250/200
My computers is working properly (excluding radeon) !
My power supply is OK (it's Chieftec)
The card was tested in other computers !
[What I was doing:]
- I replaced most of capacitors
- I tested a voltage on memory VDD is 3.3V (everytime) , but VDQ is 1.9V (at
first time) and 2.5V(at second). I found chip which givning voltage by mosfet
(it's RT9203) but i don't have this part to replace it.
- I tested other elements of this graphics board. (but I didn't find anything)
[Request]
If anyone know what is to be done to repair it, please reply me !
On this card I found chip: 11EF8HK ACT86, I don't know what it is ?
The mark on this chip is similar (or exactly the same) as to Texas Instruments.
P.S. I don't be familiar with electronics and I sorry for my english.
______________
worst-programmer
I have trouble with my graphics card, it doesn't start at first time. For
example when I turn on a computer I don't see picture at a monitor (black
screen, and green light in the monitor) but when I turn off the computer and
turn on once more then it's working fine.
If I will turn on the computer about 1-2 min. after turn off, it's not working
again.
[Informations]
Graphics card: GV-85000A-000 (RADEON 8500 powered by ATI)
RAM: 64 MB (128bit) (Samsung DDR 4ns)
Frequency: 250/200
My computers is working properly (excluding radeon) !
My power supply is OK (it's Chieftec)
The card was tested in other computers !
[What I was doing:]
- I replaced most of capacitors
- I tested a voltage on memory VDD is 3.3V (everytime) , but VDQ is 1.9V (at
first time) and 2.5V(at second). I found chip which givning voltage by mosfet
(it's RT9203) but i don't have this part to replace it.
- I tested other elements of this graphics board. (but I didn't find anything)
[Request]
If anyone know what is to be done to repair it, please reply me !
On this card I found chip: 11EF8HK ACT86, I don't know what it is ?
The mark on this chip is similar (or exactly the same) as to Texas Instruments.
P.S. I don't be familiar with electronics and I sorry for my english.
______________
worst-programmer