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Keithley 2000+2015 THD
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Rick:
Hi Costas,

Happy new year.
I still need to buy a DSO and a desoldering station with a vacuum pump (the others (solder wick, heat gun) do not work for me, I screw up the stuff I desolder), besides that I will also need a programmer (which adapters should I buy?). I realized that.
Sure, please tell me your strategy as you have realized a successful repair.
Rick:
Can I choose one of the following as a flash-EEPROM programmer?
http://www.batronix.com/shop/programmer/eprom-programmer.html
Would the cheapest one do the job or... ?
costas:

--- Quote from: Rick on January 01, 2013, 02:03:41 pm ---Hi Costas,

Happy new year.
I still need to buy a DSO and a disordering station with a vacuum pump (the others (solder wick, heat gun) do not work for me, I screw up the stuff I disorder), besides that I will also need a programmer (which adapters should I buy?). I realized that.
Sure, please tell me your strategy as you have realized a successful repair.

--- End quote ---

If you have to buy all that just to fix a DMM does not deserve , better buy a good DMM.
Is good programmer from BATRONIX , for beginners good one with 32-pin socket .... but in the future the 48 pins cover several  new flashes at 1:1 universal adapters that you can use , much cheaper or easier to built. For the first few adapters you need: PLCC32 to DIP32, PLCC32 to DIP28, SO8 to DIP8, SOP28 to DIP28 .
Generally large my repairs method without   schema is simple :
1. looking on the net as much documentation with error coded block diagrams, interpretation of error codes etc..
2. see what kind of ICs is designed device ,  search and list the  ICs pin configuration, so I know which pins is for supply  , which pins is for the communication bus , which is input pins output pins ... etc
3. Make copies of all flash and eeprom to restore if something happens on the software side.
4. take measurements on the power pins to each integrated circuit, with the oscilloscope check whether or not the supply voltage ripple.
5. with ESR-Capacimeter check electrolytic capacitors values in circuit
 6. with  oscilloscope check digital signal amplitude on the ICs  imput-output pins , bus terminals, swing on microprocessor X-tal.. etc
7. concluded and try locating defects parts

where are you from ?

WBR Costas
Rick:
I was going to buy a DSO and a desoldering station anyway because I have no oscilloscope yet. Only the EEPROM programmer will be an additional cost and I can use it in a future project who knows. I have an ESR_meter and 2 capacimeters besides that some of my DMM's (I will have 14 now with the new Bench meters I bought, including the dead 8800A/AF) can measure capacities. So I don't need a DMM but I will be having fun with "repairs".
Have you been able to identify all parts with their real names? A guy was mentionning a JFET with a Keithley codename then he discovered what it was.
I am in Istanbul. You must be from Greece. Right?
I noticed the memory chips are 32 pin ones. So the 32 or 40 pin EEPROM programmers are ok, I suppose.
Thank you very much for your advice.

One last thing you run the copy operation from a PC to which you connect your programmer right? This is how ignorant I am sorry:)
costas:

--- Quote from: Rick on January 01, 2013, 09:53:39 pm ---I was going to buy a DSO and a desoldering station anyway because I have no oscilloscope yet. Only the EEPROM programmer will be an additional cost and I can use it in a future project who knows. I have an ESR_meter and 2 capacimeters besides that some of my DMM's (I will have 14 now with the new Bench meters I bought, including the dead 8800A/AF) can measure capacities. So I don't need a DMM but I will be having fun with "repairs".
Have you been able to identify all parts with their real names? A guy was mentionning a JFET with a Keithley codename then he discovered what it was.
I am in Istanbul. You must be from Greece. Right?
I noticed the memory chips are 32 pin ones. So the 32 or 40 pin EEPROM programmers are ok, I suppose.
Thank you very much for your advice.

One last thing you run the copy operation from a PC to which you connect your programmer right? This is how ignorant I am sorry:)

--- End quote ---

If you want to get serious about service and  you a fan BATRONIX  , I recommend BATRONIX BX48 Batego II. I have a Labprog 48LV  from ELNEC, but it is pretty old and not updated software for it , of course I have a  many other homemade programmers  who helped in many cases ... often with a programmer who knows only simple generic algorithm can read customised memory . Professional programmer read the ICs ID , if you not choose correctly from the list do not read it

WBR.
Costas
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