Electronics > Repair

Fluke 289 not quite sorted.

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coromonadalix:
thoses white optos are the leads detection ...

@radistx  have you pull out every mov / resistor / protection inputs and checked them,  checked pcb traces layout up to the dial contacts ... ??

AnJu:
+fs: Open failed, error 2
Can't load '/system/apps/clem.img': error 0
err_printf: aborting command
load /system/apps/clem.img failed... trying /system/apps/BackupClem.img
fs: Open failed, error 2
Can't load '/system/apps/BackupClem.img': error 0
err_printf: aborting command
load /system/apps/BackupClem.img failed
No network interfaces found

RedBoot(tm) bootstrap and debug environment [ROMRAM]
Non-certified release, version v2_0_74 - built 08:38:05, Jun 25 2010

Platform: Fluke Clem (ARM9)
Copyright (C) 2000, 2001, 2002, 2003, 2004 Red Hat, Inc.
Copyright (C) 2003, 2004, 2005, 2006, 2007 eCosCentric Limited

RAM: 0x00000000-0x007fb500, [0x0004dd98-0x005d8500] available
FLASH: 0x10000000-0x10ffffff, 127 x 0x20000 blocks, 4 x 0x8000 blocks
RedBoot> help
Manage aliases kept in FLASH memory
   alias name [value]
Set/Query the system console baud rate
   baudrate [-b <rate>]
Manage machine caches
   cache [ON | OFF]
Display/switch console channel
   channel [<channel number>]
Compute a 32bit checksum [POSIX algorithm] for a range of memory
   cksum -b <location> -l <length>
Test clock accuracy
   clock
Display (hex dump) a range of memory
   dump -b <location> [-l <length>] [-s] [-1|-2|-4]
Execute an image - with MMU off
   exec [-w timeout] [-b <load addr> [-l <length>]]
        [-r <ramdisk addr> [-s <ramdisk length>]]
        [-c "kernel command line"] [-t <target> ] [<entry_point>]
Manage FLASH images
   fis {cmds}
Manage configuration kept in FLASH memory
   fconfig [-i] [-l] [-n] [-f] [-d] | [-d] nickname [value]
Manage Filesystem files
   fs {cmds}
Execute code at a location
   go [-w <timeout>] [-c] [-n] [entry]
Help about help?
   help [<topic>]
Display command history
   history
Set/change IP addresses
   ip_address [-b] [-l <local_ip_address>[/<mask_len>]] [-h <server_address>] [-d <dns_server_address]
Load a file
   load [-r] [-v] [-d] [-h <host>] [-p <TCP port>][-m <varies>] [-c <channel_number>]
        [-b <base_address>] <file_name>
Compare two blocks of memory
   mcmp -s <location> -d <location> -l <length> [-1|-2|-4]
Copy memory from one address to another
   mcopy -s <location> -d <location> -l <length> [-1|-2|-4]
Fill a block of memory with a pattern
   mfill -b <location> -l <length> -p <pattern> [-1|-2|-4]
Network connectivity test
   ping [-v] [-n <count>] [-l <length>] [-t <timeout>] [-r <rate>]
        [-i <IP_addr>] -h <IP_addr>
Reset the system
   reset
Display RedBoot version information
   version
Display (hex dump) a range of memory
   x -b <location> [-l <length>] [-s] [-1|-2|-4]

frenky:
You are getting the same error as I am.
Please post here any updates that might help me or others with fixing fluke 287/289. :-+

AnJu:
JFFS2 image from working Fluke 287 see the attached files.
Can you extract BackupMeter.hex and clem.img from it?

nixxon:

--- Quote from: Yakuzza on January 01, 2018, 03:44:45 pm ---@retiredcaps
If there would be something wrong with the input protection, what would be the symptoms for the device? I would assume that the device should boot up normally, but one could not make any measurements. My unit doesn’t display anything on the LCD, but most of the voltages on test points seem to be similar to those listed by @purpose and @frenky. Can I assume that any potential issue with the input protection does not have anything to do with blank LCD?
I’ve just measured voltages as @sacral described in post #39 and below are those, for which I got different readings.

@sacral
My unit powers down after few minutes and so the voltages are changing. Maybe some of the measurements you’ve made were made after the “sleep”? I’m just asking. It is probably different because mine is broken ;)

Here are deviations from @sacral list:
TP 1: 0.005
TP 3: 4.96
TP 9: 2.28
TP 16: 2.91
TP 18: 1.81
TP 32: 3.07
TP 33: 3.07
TP 34: varies in a mV range
TP 37 0.057

How can I test the LCD? Anybody can give me some simple guiding for this task, so I could eliminate the faulty LCD, please?

--- End quote ---

I bought a faulty 289 yesterday. After some internet search I ended up reading through this thread.

Yakuzza: Somehow I believe I have ended up with your particular 289 multimeter with a non working LCD display (background light is good). So everything you have written in this thread about your 289 applies to the 289 I  bought yesterday.

What is new information regarding the particular 289 is that I connected it to my computer via the IR189USB rev. II interface. All readings look good in FlukeView Forms... Does this fact imply that the problem is simply regarding the LCD display hardware?

The resistance reading is a little funny, reading 25 MegaOhms initially, but after shorting the probes for a brief moment it reads ~3.7 MOhms with open probes...

I have a 5 year old NIB 287 that is barely powered up a couple of times. I am considering swapping LCD's from the 287 to the 289 to figure out if only the 289's LCD is broken. However I am reluctant to disassembling my 287 as it is in mint condition.

Is it possible to do a factory reset via the IR189USB interface cable?

Is it possible to use the RS-232 serial type command "RSM" as described here: http://uniteng.com/neildocs/facilities/Fluke289_remote_spec28X.pdf

RMP
Reset Meter Properties

Reset meter properties to their factory default state.
This is the same operation as Reset Setup under
Setup front panel soft key.

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