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26fb99 Profile
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Accomplished DX-er

Registered: 08-2008
Location: Stoke on Trent North Staffs
Posts: 341
Karma: 4 (+4/-0)
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Gutted, yaesu 857d


problem that started as intermitent fault last week,

mode up down buttons,band up/down buttons and mic key all stopped working causing Brent obvious heartache.
All the other buttons on the face plate work ok.
this happened last week,turned off,on ....still didnt work,

left overnight,tried again next day.....worked sound.
this happened a few times over a few days.
re rigged back in the van.....Bust

currently out of action.

would this be a software problem,a problem with the face plate or in the body of the radio.

as i have no warranty left.anyone recommend a yaesu doctor???

---
yaesu FT857d,rmkl500,wilson5,2element pubical quad(the BBq).split charger aux battery.170a truck battery,mfj 941 versatune2
100% mobile station
I got 99 Problems but a whip aint 1
Brent 26 Fox Bravo 99
73s
26/Nov/2009, 9:01 pm Link to this post Send Email to 26fb99   Send PM to 26fb99
 
simon26OD004 Profile
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Registered: 07-2009
Posts: 93
Karma: 0 (+0/-0)
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Re: Gutted, yaesu 857d


Firstly before you send it anywhere, try doing a full reset to your radio, this will clear your memories but it's worth a go. Should be in your manual how to do this, usually it's holding one or 2 buttons in while switching the radio on.

Sounds to me like it's just dirty connections or maybe a faulty pins(s) on the remote head unit not locating properly. Remove the head unit from the radio and see if the pins look dirty or maybe stuck in so not making a contact. Can't hurt to clean the connectors on the head unit and the front of the radio with some IPA and a toothbrush, might just solve the problem. If your using the separation cable and remote mounting the head, it could also be a broken wire in the separation lead.

If that doesn't work then just sounds like a dry joint, or crack on a solder joint somewhere in the radio, most likely in the head unit. Not a major thing to fix if you can find it with a magnifying glass, just time consuming.

Last edited by simon26OD004, 27/Nov/2009, 2:20 pm
27/Nov/2009, 2:00 pm Link to this post Send Email to simon26OD004   Send PM to simon26OD004
 
26fb99 Profile
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Accomplished DX-er

Registered: 08-2008
Location: Stoke on Trent North Staffs
Posts: 341
Karma: 4 (+4/-0)
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Re: Gutted, yaesu 857d


nice 1 si.
id already done master reset and all that but after posting this last night i got balls deep into some serious internet gimping. found a site where this dude basically butchers up his new rigs just for the crack of it but deep in amoungst the bullshit was a piece that said that by pressing A.B.C and turning on.this performs a "relay release" which is not in any yaesu manual. worth a go ???? hey presto. sweet,but keeping fingers crossed as this is /was an intermitent/reocurring problem.been off/on off/on a few times this arvo and so far so good.

---
yaesu FT857d,rmkl500,wilson5,2element pubical quad(the BBq).split charger aux battery.170a truck battery,mfj 941 versatune2
100% mobile station
I got 99 Problems but a whip aint 1
Brent 26 Fox Bravo 99
73s
27/Nov/2009, 6:50 pm Link to this post Send Email to 26fb99   Send PM to 26fb99
 
simon26OD004 Profile
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Registered: 07-2009
Posts: 93
Karma: 0 (+0/-0)
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Re: Gutted, yaesu 857d


hmmm, relay release huh. That might be something that is built into the radio that is only known by the service dept at Yeasu, but it isn't gonna fix the problem you described unfortunatly, your fault will return. Just from the size of the radio (being so small), all of the buttons on the front of the radio must be multiplexed and taken back to the microprocessor, one (or possibly more than one) of the connections between the buttons and the microprocessor has an intermittant fault, usually this is a cracked solder joint on SMT components, or could be a faulty connector. I'm not sure where the processor is on the 897, could be inside the radio, or could be in the front panel itself. The fact that it is a bank of buttons going faulty at the same time means it can't be a simple switch/button failure and is another reason why the buttons must be multiplexed. I've had a look for the schematics for the 857 but I can't find them, not really a surprise there though. If it was me I would take apart the head unit and use a magnifying glass and check all of the SMT components for a crack on the solder joints. I dunno how confident you are in being able to strip it down though. Also the cracks are not easy to find, they can be very fine indeed but still enough to cause a problem.

What you might find is if you send it away, you'll just get it back again saying there is no fault found, kind of like when you go to the doctor and when you get there you feel fine, just sods law, lol. Intermittant faults are a pain in the ass, when your looking for them they very rarely show up emoticon

If you do get the board out of the front panel, gently pushing on the board in various places could help you find the fault, or even some freezer spray might do it too.
27/Nov/2009, 11:41 pm Link to this post Send Email to simon26OD004   Send PM to simon26OD004
 
26fb99 Profile
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Accomplished DX-er

Registered: 08-2008
Location: Stoke on Trent North Staffs
Posts: 341
Karma: 4 (+4/-0)
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Re: Gutted, yaesu 857d


i hear ya dog.a few heads on qrz reakon its a bad connection either in the the mic connection into the radio,
 1 said he,d had the very same problems and sorted it by flicking the mic pins/socket on radio with a little screwgie. but i belive this to be bollocks for my particular problem as i think it did it without the mic even being plugged in,thing is a cant dissprove it now cause its working.
il see how it goes and try the dry joint theory if it goes again.

---
yaesu FT857d,rmkl500,wilson5,2element pubical quad(the BBq).split charger aux battery.170a truck battery,mfj 941 versatune2
100% mobile station
I got 99 Problems but a whip aint 1
Brent 26 Fox Bravo 99
73s
28/Nov/2009, 11:53 am Link to this post Send Email to 26fb99   Send PM to 26fb99
 
26fb99 Profile
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Accomplished DX-er

Registered: 08-2008
Location: Stoke on Trent North Staffs
Posts: 341
Karma: 4 (+4/-0)
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Re: Gutted, yaesu 857d


bit late but incase anyone has similar problem,it was simply,when switched on with my morse key plugged in,the radio "locked up" but if switched on then plugged in it was sound.not sure why and not sure why i wasted 2 weeks learning morse lol but i get bored easy.im upto 12 wpm and can recieve lots faster but i batters my head so ive sacked it off again.

---
yaesu FT857d,rmkl500,wilson5,2element pubical quad(the BBq).split charger aux battery.170a truck battery,mfj 941 versatune2
100% mobile station
I got 99 Problems but a whip aint 1
Brent 26 Fox Bravo 99
73s
13/Dec/2009, 8:14 pm Link to this post Send Email to 26fb99   Send PM to 26fb99
 
26WD40 Profile
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Freebander

Registered: 05-2009
Location: mobile
Posts: 19
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Re: Gutted, yaesu 857d


i know this sounds strange but it could be RF getting in somewher i had this with my 897 but it knocked out the up down buttons on the mic i sorced my RF trubble and job done if it carries on and you need some one to look into it for i recomend castel electronics i wont send my hf kit any where else not cheep but dose a good job

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works mobile big volvo truck --- yaesu ft857 atas120
my mobile landrover 110 with some addons --- alincodx70th outbacker perth
home --- kenwood ts570 ts430 ts440 r2000 imax2000 g5rv-x2
20/Dec/2009, 11:16 pm Link to this post Send Email to 26WD40   Send PM to 26WD40
 
26fb99 Profile
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Accomplished DX-er

Registered: 08-2008
Location: Stoke on Trent North Staffs
Posts: 341
Karma: 4 (+4/-0)
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Re: Gutted, yaesu 857d


Rf. sounds like the badger.will deffo consider this advice if decide to have another bash at morse.have lost interest though.
cheers wd40

---
yaesu FT857d,rmkl500,wilson5,2element pubical quad(the BBq).split charger aux battery.170a truck battery,mfj 941 versatune2
100% mobile station
I got 99 Problems but a whip aint 1
Brent 26 Fox Bravo 99
73s
24/Jan/2010, 7:45 pm Link to this post Send Email to 26fb99   Send PM to 26fb99
 


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