Solartron 7066 EPROM firmware wanted - Page 1
Forum section: electronics / general

author: Ludwik
author_rank: Contributor
timestamp: March 14, 2022, 06:12:06 pm
content: HelloI am looking for an eprom program for my meter.Unfortunately, he died some time ago. One of the eproms has lost its contents and I need a batch to reacquire my favorite old meter.I will be very grateful for helping to feed the furniture, which will become my favorite toy for more difficult repairs.This device was under two logos. Internally, they are identical.(get different results with subsequent reads with my programmer/reader).

author: bastl_r
author_rank: Regular Contributor
timestamp: March 17, 2022, 03:07:57 am
content: HelloWhat is the difference to the Solartron 7065 that i have?The pictures in the web show, maybe, the same items.

author: Ludwik
author_rank: Contributor
timestamp: March 17, 2022, 09:00:09 pm
content: It has one downward ohmmeter range, another digital part around the processor.7065- 1 pcs EPROM- 1 pcs RAM7066- 2 pcs EPROM- 2 pcs RAMI found so many differences while looking at the documentation.

author: tridac
author_rank: Regular Contributor
timestamp: August 31, 2023, 02:19:17 pm
content: Hi,Have a 7066 and can copy the eproms if still required. Mine has fault and manual would be a great help, if you have a copy...Regards,Chris

author: Ludwik
author_rank: Contributor
timestamp: November 18, 2023, 07:37:04 pm
content: I'm still looking for an EPROM. Unfortunately, the notification did not arrive and I only looked at the website today. The meter is lying there and screaming for a dunk.​I would be very grateful for your help.Luis

author: DVM-James
author_rank: Contributor
timestamp: November 27, 2023, 05:57:25 pm
content: I hope it helpsBe sure to use 2532 EPROMs .

author: SanderMTI
author_rank: Contributor
timestamp: November 30, 2023, 01:55:15 am
content: Quote from: tridac on August 31, 2023, 02:19:17 pmHi Chris,From the picture, I'd say that a 7066 is a 7065 with a "data store" option.I have a few 7065's, found the schematics & such on-line, and have repaired these units before.Send me an email if I can help with your 7066.Sander

author: tridac
author_rank: Regular Contributor
timestamp: November 30, 2023, 06:13:30 pm
content: Thanks. I no longer have the 7066, but did copy the eproms. Image files attached. Also have a 7081, which had psu fault on receipt, but fine now and quite stable, though the hpib control sometimes has to wait for the auto zero run, usually a few seconds every 15 minutes or so...

author: MuShan
author_rank: Contributor
timestamp: December 12, 2023, 08:18:27 am
content: What specific model is it?

author: MuShan
author_rank: Contributor
timestamp: December 13, 2023, 02:12:17 pm
content: Can you tell me where the EPROM is located? I did not find it in the schematic of 7065

author: bastl_r
author_rank: Regular Contributor
timestamp: December 15, 2023, 04:09:09 pm
content: HiIn the schematic on page 235 is a ROM called item next to the MCU. Part no IC32. MC68317

author: bastl_r
author_rank: Regular Contributor
timestamp: December 21, 2023, 02:54:13 am
content: Does anyone have a service manual for the 7066.My device is labeled "Kontron Messcomputer 4066".I have just seen a 7066 on ebay and am no longer sure whether it is a 7065 or a 7066.I'll take some pictures of the inside in the next few days and post them here for identification purposes.

author: DVM-James
author_rank: Contributor
timestamp: December 21, 2023, 11:41:34 am
content: It´s easy to test without opening the covers.Measurement may be 1,5433 V DC or so.If there is the yellow "STORE"-key, press it and the display will show " S _ _ " .Now you can enter a store-location between 5 and 29.With the "ENTER"-key (key V DC ) the measurement will be stored.Change the measurement - 0 V Dc or so.Recall with "STORE" , "S _ _ " , "5" , "RECALL" (key kOhm) , the stored measurement will be shown.If it works so, it´s a 7066 !(or a KONTRON4066 or a R&S UDS6 ... or ? ?)To tell the truth - I have the complete manuals - service and users ... BUT it´s not possible for meto scan over 600 pages ! :'( AND I will not give them out of my hands.If there are some fails or questions I will try to add the regarding diagrams - but it will take time !regards James

author: bastl_r
author_rank: Regular Contributor
timestamp: December 22, 2023, 07:42:56 pm
content: Are you from Germany? Possibly near Stuttgart?If yes, i think we can make a deal.Regards

author: DVM-James
author_rank: Contributor
timestamp: December 23, 2023, 02:08:03 pm
content: Sorry, I´m from Hannover/Germany.Yesterday I have compared the service-manuals 7065 and 7066.There are 4 different drawings only: integrator, floating logic, data control / microprocessor and keyboard.The user manual shows 16 additional pages ( description STORE-handling ).If one has downloaded the 7065 manuals from the wellknown internet-pages, the drawings are 100% betterthan that what I have !I will scan the different parts - BUT give me some time - my very old book-scanner works under WIN98 ! !Wish You a merry christmas

author: bastl_r
author_rank: Regular Contributor
timestamp: December 24, 2023, 07:38:56 am
content: That would be great!Thanks in advance.I am now sure that I have a 7066.The UDS6 also has the store button like my Kontron.Attached are two descriptions in German which I once downloaded from Singer.(only one. The Solartron document is to big. 6MB.)Regards and Merry Christmas

author: DVM-James
author_rank: Contributor
timestamp: December 26, 2023, 03:01:05 pm
content: Hello againI just have scaned the Solartron7066 pages that are different to the 7065.I also found the check-sum for the 3 EPROM-bin-codesI have added on my first post.7066_LO : 63D967066_HI : 6C06A7066_232 : 5EC00I hope, everybody got a nice surprise on Christmas - if not see attached files.

author: DVM-James
author_rank: Contributor
timestamp: December 26, 2023, 03:04:53 pm
content: And one missing attachment !regards James

author: bastl_r
author_rank: Regular Contributor
timestamp: December 26, 2023, 07:54:43 pm
content: Thanks for the effort.I have now also packed the too large Solartron document, split it into two parts and attached them in two separate posts.Because only files with valid extensions may be attached here, please rename the files as follows:schlumberger7065_deutsch.001.7z toschlumberger7065_deutsch.7z.001andschlumberger7065_deutsch.002.7z toschlumberger7065_deutsch.7z.002regards

author: bastl_r
author_rank: Regular Contributor
timestamp: December 26, 2023, 07:55:34 pm
content: Atachment 2...

author: MuShan
author_rank: Contributor
timestamp: March 19, 2024, 04:17:29 pm
content: Solartron 7066 May I ask what model of MPU it is? My MPU has a broken pin

author: DVM-James
author_rank: Contributor
timestamp: March 19, 2024, 05:41:48 pm
content: Hello,it´s a MC6802PregardsJames

author: bastl_r
author_rank: Regular Contributor
timestamp: April 05, 2024, 06:05:58 pm
content: HiHere i has two pictures from my Kontron 4066 Messcomputer aka Solartron 7066. One from the interface card wich is on top of the Cpuboard and one from the Cpuboard.Regards Armin

author: Ludwik
author_rank: Contributor
timestamp: September 18, 2024, 05:07:23 pm
content: Thank you for everything, I finally have the time and documentation to start the next stage of the repair.During the diagnosis, I found 6 carbon resistors whose parameters differ significantly from the norm, e.g. instead of 68k there are 126k.What resistors do you recommend instead? Now I install metal 1% because I have it in stock.

author: DVM-James
author_rank: Contributor
timestamp: September 24, 2024, 03:29:22 pm
content: Hello again,it would be interesting for some people to know more about the reference-numbers of that regarding resistors. Are they on the power supply board ? I think this are 0,25 or 0,4 watts resistors 10 % - so You can use metalfilm ones.It would be also interesting to know a little bit more about the problems You have or had with Your 7066.

author: Ludwik
author_rank: Contributor
timestamp: November 15, 2024, 07:17:39 pm
content: HelloMy meter has been having random resets during measurements for a long time.This happened once every few months. Now I set the 10V range, turn off automatic range switching and do the test:- I apply negative voltage from the laboratory power supply, the readings are ok;- I apply positive voltage, it measures up to about 0.6 V, then the display blinks strangely, the display turns off at about 2.5 V.Please check whether the square wave at the TP201 measurement point should have an amplitude of 10V. Mine has 5V.In the diagram, someone added that there is a 10V square wave.The meter also sometimes had problems with stability, so I check all resistors.After purchase, I replaced all electrolytic capacitors with tantalums and the improvement was significant.He worked for several years and did many projects.Thanks everyone for your help.

author: bastl_r
author_rank: Regular Contributor
timestamp: November 16, 2024, 11:40:56 am
content: Quote from: Ludwik on September 18, 2024, 05:07:23 pmWich ones did you mean? There are more than 6 resistors in it.QuoteOn my meter the last two digits was also not stable. The problems are, so i think at the pll wich is located under the little cover.regards

author: Ludwik
author_rank: Contributor
timestamp: November 16, 2024, 04:12:26 pm
content: It was the resistors in the integrator, because I have a problem with it.I have to check them all. The best thing is: you measure the 1k resistor in the system and it shows 1.5k.If you heat it up, it will be 1.2k when desoldering.Pll I adjusted. is now stable. I checked with a frequency counter with a GPS pattern.

author: Ludwik
author_rank: Contributor
timestamp: November 25, 2024, 09:30:29 am
content: I continue to measure carbon resistors in my meter and came to the following conclusions:1. resistors 10k and above, about 50% damaged - deviation above 20% or even 70%2. other values ​​depend on the load, mortality approx. 25%Conclusion - I will eventually replace all of them with metal 1%. Most in stock, processing capacity needed.All documentation on the Internet lacks a diagram of the ohmmeter driver for 7065, diagram page designation 2.5. Does anyone have one of these ?

author: bastl_r
author_rank: Regular Contributor
timestamp: November 25, 2024, 04:03:06 pm
content: View all documents uploaded by DVM-James.The missing pages are there.

author: Ludwik
author_rank: Contributor
timestamp: November 27, 2024, 04:15:54 pm
content: This is the one page missing from the scanned 7065 documentation circulating on the Internet.I downloaded from several different sources and it's the same everywhere.The same incomplete file.

author: DVM-James
author_rank: Contributor
timestamp: December 06, 2024, 10:55:18 am
content: Is this the missing page ? - it´s the same as on my 7066-servicemanual

author: Ludwik
author_rank: Contributor
timestamp: December 09, 2024, 06:33:34 pm
content: Thank you very much, this is the page that was missing in the scans available on the net.The meter is starting to come back to life, unfortunately the quality of the TTL systems available today leaves much to be desired.When I install something other than the TTL 74F series in the meter there are problems with stability.The regular ICs available on the market today are garbage that no one wants because they do not meet the standards. Only for children to play with.I plan to restore it to better stability than the original, but that requires some work. Unfortunately,all the resistors except the critical ones for measurement are carbon and fly off after heating.Incidentally, I found an unstable ttl in the integrator and the fun begins.I also have corrosion spots on the chips and the unfortunate carbon resistors and I wonder if someone kept this meter under the gutter.The rest of the elements don't look bad, but why is only some of it corroded?This meter, even in an unstable state, helped me solve several serious problems before one day it simply got offended and wouldn't go through the post.For now, a handful of resistors, 4 diodes and 2 obvious integrated circuits. I didn't dig into it before because it measured quite ok for a cheap meter at the price of 4 and 1/2 digits.Thank you all for your help, when I get it back to full working order I'll brag about it.

author: Ludwik
author_rank: Contributor
timestamp: December 14, 2024, 11:21:57 am
content: I look at the photo of the interior and I envy how clean it is. Speaking of a bad jumble of parts. In my case, it's only a TI (Motorola processor and memory, of course)