Welcome, Guest. Please login or register.

Author Topic: 040, possible to repair?  (Read 8474 times)

Description:

0 Members and 1 Guest are viewing this topic.

Offline PG

  • Full Member
  • ***
  • Join Date: Feb 2004
  • Posts: 221
    • Show all replies
Re: 040, possible to repair?
« on: October 24, 2007, 09:34:38 PM »
If you want to send it to Sweden, i can take a look at it.
 

Offline PG

  • Full Member
  • ***
  • Join Date: Feb 2004
  • Posts: 221
    • Show all replies
Re: 040, possible to repair?
« Reply #1 on: October 24, 2007, 09:50:17 PM »
Try the card without memory installed (remove the ram jumper also).
If the card works now you have a problem with the memory stick or the memory controller IC (Mach 210).
If the Mach 210 is the problem, i have new in stock.
(This IC is a PLD, an empty Mach 210 will not work!)
You can also have a problem with the bus chip, Mach 131.
Or the cpu, but its soldered to the PCB...
 

Offline PG

  • Full Member
  • ***
  • Join Date: Feb 2004
  • Posts: 221
    • Show all replies
Re: 040, possible to repair?
« Reply #2 on: October 24, 2007, 10:27:31 PM »
No, only remove the RAM jumper + Ram card!
 

Offline PG

  • Full Member
  • ***
  • Join Date: Feb 2004
  • Posts: 221
    • Show all replies
Re: 040, possible to repair?
« Reply #3 on: October 25, 2007, 01:11:29 PM »
No problem.. :-)
The ram jumper is marked RAM on the PCB and is located near the battery!
This jumper should be removed when you have no memory installed and closed when you install a ram board.
Dont remove the clock jumper that is marked CLK.
This jumper should be closed in the 040 position.
 

Offline PG

  • Full Member
  • ***
  • Join Date: Feb 2004
  • Posts: 221
    • Show all replies
Re: 040, possible to repair?
« Reply #4 on: October 25, 2007, 03:45:19 PM »
Ok, so now at least we know that you dont have a memory problem..:-)
As said before, if you cant get your card working its possible for you to send the card to me in Sweden if you want.
I have both PLD:s and can replace the cpu if its faulty.
If i cant repair it, you only pay the shipping cost...
PM me for details if you are interested.
 

Offline PG

  • Full Member
  • ***
  • Join Date: Feb 2004
  • Posts: 221
    • Show all replies
Re: 040, possible to repair?
« Reply #5 on: November 14, 2007, 12:49:10 PM »
Framiga,

Quote
looking at the "reworking" job, theres a lot of damaged traces (and seems some bad solders on some CPU pad pins also).


This is rubbish, what are you talking about??

The cpu was removed with hot-air technique and the holes were cleaned carefully with a Denon SC-7000 desoldering gun before installing a new cpu socket, NO traces are damaged on tokyoracers card and there is no bad solders either.
I use a high quality Weller soldering station and have more than 20 years experience in this kind of work.
Yes, one of the interface ic:s are replaced, this was an attempt to get the card working after testing almost anything else, if i had 4 new all of them had been replaced and hopefully the card had worked again.
(In fact, as i told tokyoracer, this ic was removed from a spare apollo card so i cant guarantee this ic is ok, either)

The reason why i suspect the interface ic:s is because it looked like some kind of fluid (water) have been on the card, the replaced ic:s pins were oxidated.

Of course it CAN be something else that is wrong with tokyoracers card but there is really not many components left on the card to suspect.

Check my track record and you will find only satisfied customers who has sent their cards to me for upgrade.
Until this day i have NEVER ruined a card by doing a bad soldering job.
Why i am upset about this?
I aint really, but i feel i have to defend myself to this kind of rubbish...