Author Topic: Tek CSA7404/TDS7000 repair project (Upgraded memory/CPU)  (Read 104492 times)

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Online Ice-Tea

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Re: Tek CSA7404/TDS7000 repair project (Upgraded memory/CPU)
« Reply #400 on: July 19, 2018, 06:40:10 pm »
I assembled the FRAM board today. I'll install it later after I receive the rest of the upgrade parts.


Just wondering... Did you ever install it? Does it work?
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Offline GastonBA

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Re: Tek CSA7404/TDS7000 repair project (Upgraded memory/CPU)
« Reply #401 on: August 13, 2018, 11:19:57 am »
Hey, could you help? I have a CSA8000 that get stuck on the initialization screen of the 8000 series scope. I already changed the battery (used a bigger one this time, no use to change it to the same) and I had the cables connected to the MAX232 chip as you shown on your photos, plugged in with micro connector. I do have some serial to USB device (NI USB to RS232) that I connected, but I fail to capture the activity in any terminal.
Is connecting the USB-232 OK or the chip connections that you show are only UART signals? What terminal software you use to capture all that chat?
Thank you very much in advance,
Gaston
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Online Ice-Tea

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Re: Tek CSA7404/TDS7000 repair project (Upgraded memory/CPU)
« Reply #402 on: August 13, 2018, 04:43:44 pm »
I use Putty. You can also catch it on the 2x8 0.100" on the edge of the board
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Offline GastonBA

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Re: Tek CSA7404/TDS7000 repair project (Upgraded memory/CPU)
« Reply #403 on: August 14, 2018, 02:09:16 am »
I am connecting like this through a USB to serial National Instrument device, that does not show any activity.
Programming putty just show me a green cube. Something is wrong.
Could someone confirm that these connections are intended for Serial device and not a other kind, like UART?

Thank you,

Gaston
 

Offline GastonBA

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Re: Tek CSA7404/TDS7000 repair project (Upgraded memory/CPU)
« Reply #404 on: August 22, 2018, 01:43:29 am »
I got it working by browsing the million posts that are in this repair topic... Got the side RS232 connection port made with a special cable. Thank you all.
 

Offline hoo121

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Re: Tek CSA7404/TDS7000 repair project (Upgraded memory/CPU)
« Reply #405 on: October 05, 2018, 01:50:01 pm »
Hello All,

My TDS7054 was finally working fine.  I removed the 3 V battery on the motherboard for couple of minutes and placed it back. subsequently the scope stopped working.  When it is turned on, all its buttons light up and stay on, you can hear floppy drive noise and couple of beeps but display remains blank, that is all, no further activity!
I hope someone be able to guide me through solving this problem.  I am hoping that there will not be a need for programming anything which is beyond my capability as I am not a computer specialist.

Regards
 

Online Ice-Tea

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Re: Tek CSA7404/TDS7000 repair project (Upgraded memory/CPU)
« Reply #406 on: October 05, 2018, 05:17:58 pm »
The 3V battery of the 'windows system'? That's the CMOS battery, in which case the Bios 'forgot' to put the screen on the LCD screen. Attach a display with VGA cable on the back.

It's probably stuck on 'CMOS checksum error' or 'Keyboard error' or some such which is also why it is not booting very far.
An engineer never has a problem. He just needs more time.
eBay shop with all the gear you need!
FS: TTi TSX1820P, Agilent Infinium 54815A, 54825A, R&S CMU 200  Tektronix CSA8000B, HP 8594E, 8595E, 8662A, 8663A, R&S SMHU, IRF 2051, Marconi 6201B 8GHz
 

Offline Jwalling

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Re: Tek CSA7404/TDS7000 repair project (Upgraded memory/CPU)
« Reply #407 on: October 05, 2018, 07:32:36 pm »
The 3V battery of the 'windows system'? That's the CMOS battery, in which case the Bios 'forgot' to put the screen on the LCD screen. Attach a display with VGA cable on the back.

It's probably stuck on 'CMOS checksum error' or 'Keyboard error' or some such which is also why it is not booting very far.

What he said. You have to plug into the motherboards VGA port instead of the scope out VGA port. In the BIOS setup, set the default video interface to PCI instead of AGP/onboard. Save and reboot.

Tek should have had the BIOS customized for this. :--
Jay

System error. Strike any user to continue.
 

Offline hoo121

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Re: Tek CSA7404/TDS7000 repair project (Upgraded memory/CPU)
« Reply #408 on: October 06, 2018, 01:46:59 am »
Gentlemen,

I really appreciate for your help and your fast reply.  I know now what to do.

I however have one more problem (my original problem that led me to remove the CMOS battery).  Some two weeks ago, I decided to replace the scope's hard drive with a SSD (bad bad mistake!).  The scopes hard drive got damaged during making the image file (friend was helping) and although I have the original restoration dick that came with the scope, it was giving the lack of memory error message when I tried to recover TEK's original win98.  Finally TEK emailed me with the right restoration file and I managed to install the original win98 on SSD along with the firmware 2.55. This process by itself was a major time sink for me (FAT 32 formatting for the SSD to be recognized, etc, etc).

After everything working again, I needed to install the scope's option, but realized that the scope's serial number was somehow missing on TEK Scope program. I called TEK for help and they wanted me to send them the scope for repair! That is when I came across your website and learned that one could add a .sn in vxBoot folder to provide the serial number to the scope. I decided to experiment first with an example file that was provided by someone with their own serial number, since I did not know how to create and edit HEX files.  Well, it did work, but the scope has stuck with the wrong serial number and I can't override the wrong serial number (on the positive side, I now know how to edit HEX files :)). I still can't install the original options.  After further reading on your website, I learned that one should both delete the .sn file and remove the battery for the Dallas chip to be wiped clean in order to change the serial number to is original value.   You may laugh, but the only battery that I could clearly see, was the CMOS battery on the motherboard so I removed it, which of course added to my original problems. 

Would you please let me how I can override the wrong serial number stored on the scope and replace it with the original one so that I can install its options.

Thanks in advance.
 

Online Ice-Tea

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Re: Tek CSA7404/TDS7000 repair project (Upgraded memory/CPU)
« Reply #409 on: October 06, 2018, 03:12:29 am »
You may want to read through the entire thread. Taking away the battery from the Dallas chip will keep the Tek soft from working until you restore the contents of it.
An engineer never has a problem. He just needs more time.
eBay shop with all the gear you need!
FS: TTi TSX1820P, Agilent Infinium 54815A, 54825A, R&S CMU 200  Tektronix CSA8000B, HP 8594E, 8595E, 8662A, 8663A, R&S SMHU, IRF 2051, Marconi 6201B 8GHz
 


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