Advantest R6243 teardown and repare - Page 1
Forum section: electronics / testgear

author: ketil b
author_rank: Regular Contributor
timestamp: November 27, 2015, 11:16:11 pm
content: Hi allI scored this SMU for a steel. It would pass its self tests then throw a over heat error. After a bit of probing about I reverse engineered the temp sensing circuit and found that R91 was a dead short. After a little bit of soldering I have a working SMU.I knowhas already been a teardown of this unit, so i won't repeat that and hopefully add to it.This thing is deep 460mm from the front panel to the back and heavy 15kg, a third of the inside is the power transformers.The board on top of the heatsink look like the high voltage board this might be the only difference between the R6243 (110v @ 2A) and the R6244(20v @ 10@)Now to sume picsthanksketil

author: ketil b
author_rank: Regular Contributor
timestamp: November 27, 2015, 11:21:04 pm
content: And sume more pics of the digital / analog control.thanksketil

author: ketil b
author_rank: Regular Contributor
timestamp: November 27, 2015, 11:22:41 pm
content: And sume morethanksketil

author: deadlylover
author_rank: Frequent Contributor
timestamp: November 28, 2015, 02:46:36 am
content: Very nice thanks for sharing.Here I have its older sister, it's not every day you find a power supply (okay it's a SMU, a bit more posh =P) with Alpha bulk foils and a LM399 inside. I've seen the same unit use Alpha hermetic sealed resistors, looks like I picked the short straw though, oh well.

author: ketil b
author_rank: Regular Contributor
timestamp: November 29, 2015, 12:27:06 am
content: I've seen these pop-up from time to time and thought it would be interesting to get one and compare it to the one I have. Your wand it's a lot more modular than the one I have and my one doesn't have an lm399ThanksKetil

author: deadlylover
author_rank: Frequent Contributor
timestamp: November 29, 2015, 03:53:44 am
content: One important point for the older TR6143, I don't think you can change the input AC supply voltage if buying one from overseas, I didn't see anything obvious anyway.

author: Jay_Diddy_B
author_rank: Super Contributor
timestamp: November 29, 2015, 04:57:22 am
content: Quote from: deadlylover on November 29, 2015, 03:53:44 amLook at the fuse holder / power input at the back. There may be a voltage setting there.Regards,Jay_Diddy_B

author: deadlylover
author_rank: Frequent Contributor
timestamp: November 29, 2015, 05:26:34 am
content: Quote from: Jay_Diddy_B on November 29, 2015, 04:57:22 amI couldn't find anything unfortunately, the unit has two transformers (I think) and they looked to be sealed up pretty well, the covers were folded in and not screwed on. I suspect the taps are hiding inside them but I gave up tearing the things down after 20 minutes.

author: TrexREXX
author_rank: Newbie
timestamp: November 29, 2015, 11:55:33 am
content: Quote from: ketil b on November 27, 2015, 11:21:04 pmHelloMy Advantest R6243 the test results in an error+344 VSVM 110 V +FSVoltage at the control points TP1,TP1, TP3, TP4, TP5, TP6, TP7 TP8 are too highYou can measure the voltage at the control points TP1,TP1, TP3, TP4, TP5, TP6, TP7 TP8?Thank you

author: ketil b
author_rank: Regular Contributor
timestamp: December 01, 2015, 09:18:48 pm
content: Hi i can do those measurements but have to clear some projects off my bench firstThanksKetil

author: TrexREXX
author_rank: Newbie
timestamp: December 02, 2015, 07:39:58 am
content: Quote from: ketil b on December 01, 2015, 09:18:48 pmOK!!Thank you

author: TrexREXX
author_rank: Newbie
timestamp: December 18, 2015, 05:12:14 am
content: Quote from: ketil b on December 01, 2015, 09:18:48 pmHi ketil bI repaired the Advantest R6243Some resistors on the payment located overradiator were in break.Now everything worksBut there were questions on tension on control pointsYou couldn't help me?I made the plateTP9 GNDCTP1 +139V =+165V TP5 -139V =-165VTP2 +91V =+111V TP6 -91V =-111VTP3 +55V =+73V TP7 -55V =-73VTP4 +31V =+42V TP8 -31V =-42VYou couldn't help me?

author: DEHiCKA
author_rank: Contributor
timestamp: March 19, 2016, 12:13:26 pm
content: Just revived couple of those beasts!3 cracked resistors and one TI's OPA627 opamp. The opamp was tough to figure out, it has inconsistent resistance disconnect inside it's caseNot to mention OPA627 costs freaking $25 per piece. Funny fact, chinese even sell fake OPA627's wich have AD744 silicon under the hood:Originalvs.FakeThanks, AD nowadays makes it's $5 analog - ADA4627BTW, anyone has some luck with Cal menu?I don't have "Cal Switch Set" on mine units. GPIB command XENT also missing, but X? is present, so maybe Cal entering is hidden on earlier firmwares?Any thoughts?

author: gamalot
author_rank: Super Contributor
timestamp: May 20, 2016, 12:55:41 pm
content: Quote from: DEHiCKA on March 19, 2016, 12:13:26 pmYou don't have the "Cal Switch Set" menu entry because of your R6243 is working in the R6143 compatibility mode.You can release this compatibility mode by pressing the MODE and DIRECT buttons then power on.

author: TrexREXX
author_rank: Newbie
timestamp: May 23, 2016, 10:47:43 am
content: Quote from: gamalot on May 20, 2016, 12:55:41 pmThank you!

author: aronake
author_rank: Frequent Contributor
timestamp: October 08, 2023, 06:30:45 am
content: Quote from: DEHiCKA on March 19, 2016, 12:13:26 pmWhat error message did it show when faulty? which 3 resistors replaced?

author: aronake
author_rank: Frequent Contributor
timestamp: October 09, 2023, 04:30:31 am
content: Quote from: DEHiCKA on March 19, 2016, 12:13:26 pmLong time ago, but do you remember, have a picture or can make a picture of which resistors and which OPA627 was changed?

author: vinovino
author_rank: Contributor
timestamp: December 03, 2024, 10:31:06 am
content: Quote from: DEHiCKA on March 19, 2016, 12:13:26 pmWhat self-test error did OPA627 resolve?