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FT-857D S表不显示 [复制链接]

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离线bg2tr
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1552
只看该作者 40楼 发表于: 2011-12-19
cfwm 455e

那个
离线bi7nv
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3334
只看该作者 41楼 发表于: 2011-12-19
我的估计没错,错就错在没人信我。
离线BD7PQ
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542
只看该作者 42楼 发表于: 2011-12-20
我的857也搞掂了,滤波器拆开后发霉,估计是yaesu没选好零件供货商,感谢秘书长bh7jhc!
离线BH4WHN
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77
只看该作者 43楼 发表于: 2011-12-21
'
感谢bg2tr的技术支持和宴请!心情好了,也喝到了特供!
'
不得不指出换的cf1003应该用455g才对,不应该是455e。cf1002才是455e,455g阻抗2k,455e阻抗1.5k,两者指标是有差异的,这图上维修后两只都变455e了。
离线BD7PQ
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542
只看该作者 44楼 发表于: 2011-12-24
这张贴必须顶
离线bg6art
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23433
只看该作者 45楼 发表于: 2011-12-24
mark,技术贴!
离线BG2UE
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1994
只看该作者 46楼 发表于: 2011-12-26
[quote=张寅]不得不指出换的cf1003应该用455g才对,不应该是455e。cf1002才是455e,455g阻抗2k,455e阻抗1.5k,两者指标是有差异的,这图上维修后两只都变455e了。[/quote]
随手找了一个换上试试!以后有机会在弄个!带g的455!
谢谢提示!
离线BG2UE
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1994
只看该作者 47楼 发表于: 2011-12-27
[quote=张寅]不得不指出换的cf1003应该用455g才对,不应该是455e。cf1002才是455e,455g阻抗2k,455e阻抗1.5k,两者指标是有差异的,这图上维修后两只都变455e了。[/quote]
贴些资料,希望对大家有用!
离线BD7OXR
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4532
只看该作者 48楼 发表于: 2011-12-27
恭喜大家维修好设备,看来是个故障高发点。我的857 现在又开始出现显示屏竖向缺画现象,是安装在汽车上 面板分离安装的。估计和震动有关系。
离线BG4IGX
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7470
只看该作者 49楼 发表于: 2011-12-27
yaesu公司的机器,滤波器选购有问题,6r也有这个通病,滤波器坏,拆开坏的滤波器,里面有发霉现象。
离线BD8ABM
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5138
只看该作者 50楼 发表于: 2011-12-27
yaesu该挨口水
我的897话筒咪线圈霉断 好在80c的咪头能装在mh-31里面。
离线bh7ni
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2743
只看该作者 51楼 发表于: 2011-12-30
'
恭喜大家维修好设备,看来是个故障高发点。我的857 现在又开始出现显示屏竖向缺画现象,是安装在汽车上 面板分离安装的。估计和震动有关系。
'

慰问一下。。。
离线net2000
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4525
只看该作者 52楼 发表于: 2011-12-30
'
恭喜大家维修好设备,看来是个故障高发点。我的857 现在又开始出现显示屏竖向缺画现象,是安装在汽车上 面板分离安装的。估计和震动有关系。
'


显示屏竖向缺画看样子也是通病(897d也有),一般用了几年就开始发作,不少ham用了一两年了,估计有一部分就快出现这问题了,但要注意:有的ham在清洗导电橡胶时把整块屏全整坏了,不得不从日本买屏。

这位ham在网站eham.net上对ft-857d的评价很低。

呼号:ea3wr 评分: 1分/总分5 dec 7, 2011 04:14 send this review to a friend
display problem(显示问题)   time owned(拥有时间): more than 12 months(超过12个月)
poor quality components and assembly.
元件质量和组装太差。

after some years of use, display appears with dead lines, showing incomplete characters. yaesu is not directly represented in spain, just through a dealer that provides expensive and poor quality after sales service. buying a yaesu radio in spain is really dangerous when it comes to service. i also have icom and kenwood radios and the experience with service is totally diferent.
用了几年后显示屏有暗线、显示字符不完全(后面内容就是指责yaesu在西班牙的售后服务太差的,与icom和kenwood的完全不同)
离线net2000
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4525
只看该作者 53楼 发表于: 2011-12-30
这个ham也有显示屏缺像素情况,另外还指出了一堆问题,不过,凭心而论,以857d这价格,机子算是不错的了。

ve3fax 评分: 3/5 nov 27, 2011 09:45 send this review to a friend
ok rig for the money-not great   time owned: more than 12 months
so many 5/5 ratings?

3.5/5 is more suitable after really spending years using this rig. it's ok for the price, but certainly not a 5/5. here are the negatives that are missing from the reviews and a few common long-term problems:

display matrix loses pixels after a few years-making reading displayed characters difficult.
用了几年后,显示矩阵丢失像素,辨认字符困难。
rf transistor bias often mis-adjusted from factory and requires regular re-adjustment (drifting?). this causes alc/rf output instability, especially when reducing down for digital and qrp ops.
射频晶体管偏置经常从工厂出来就是失调的,需要重新调整(漂移?),这造成alc/rf不稳,特别是当减少功率进行数字模式和qrp操作时。

(often heard as squealing, fluttering et.) there is some internet info on dealing with this problem- check-out an italian technician's website.

high noise and artefacts while in xmit idle (and with audio input). there are mods to reduce this somewhat.

high swr fold-back does not seem to protect rig when running qrp, likely due to the bias instability problem mentioned above? cases of blown finals as a result. careful.

six metre oscillation and all band am mode distortion problems were common on some production batches. after repair by yaesu, my rig is now ok, although their tech did a terrible job aligning and setting-up carrier offset et.

in qso rcv, menu knobs and features can be mastered, but can be difficult. this is typical when rigs are made compact. computer control makes it easier, but not when mobile or working pile-ups et.

optional filters help very little. they do help with some close-in agc pumping, and use of menu driven if offset but knob/menu must be mastered to shift away from interfering signals. filter will help, but is it worth the price for "the casual operator" when considering over-all receiver quality? get the narrowest ssb filter possible!

ahh , now for the dsp. don't forget, it has audio dsp, not i.f.dsp. it works great for cw, and can be helpful for ssb, but don't expect miracles. noisy conditions can be improved to pull-out some signals. using if shift and dsp audio pass-band adjustment helps ssb, but a lot of twiddling is required with marginal usefulness. one thing for sure: the auto notch dsp is almost useless. needs an s-9 heterodyne to work! i find it sometimes works better filtering general qrn.

this rig(like others), can be effected by rf getting into power cable and control cables.

rf and power spikes have been known to change/corrupt menu settings.

receiver is "ok", but after trying to use it for a band-blasted arrl field-day, we broke down and went to my 1980's yaesu ft-102 hybrid rig instead. long-time hams were blown-away at the difference in front-ends and how amazingly better the ft-102 was for receiving. not a fair comparison, i know. but if your after a quality receiver for fair price, rather than all band ops., maybe consider an older high-end rig.

so, keep these things in mind should you have problems down the log or if you are expecting a 5/5 rig.

don't get me wrong! for the money and frequency agility, i would buy this rig again. i get excellent mobile report running hamstick type antennas. it's light-weight and easy to move from car to home to suitcase.

lots of computer control and digital in/output options that work well and interfaces can be easily homebrewed and work well.

having hf,6m, v/uhf in one rig is nice and after my repair for am distortion, even get good am reports.

so, over-all a neat little rig, but depending on the kind of operating, you may be slightly frustrated or disappointed. but comparing price based alternatives, its generally a good rig, but not worthy of a 5/5 !
离线net2000
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4525
只看该作者 54楼 发表于: 2011-12-30
857d的另一个问题:不能静噪的解决办法:http://alz.customer.netspace.net.au/ft857.htm
离线赵宇宁
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3553
只看该作者 55楼 发表于: 2011-12-30
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另一个问题:不能静噪的解决办法:http://alz.customer.netspace.net.au/ft857.htm
'
这个网页不错,mark一下
离线BH4WHN
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77
只看该作者 56楼 发表于: 2012-01-05
8x7系列还是很皮实的机器,857车载很方便,897肚子里塞个20a动力锂拎着就可以到处跑,出门根本不用记挂带电源和一把线,操作简单易上手,散热也很好,皮实耐操是一大优点。至于故障,因为没有机器是神器。
离线BG9GBZ
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331
只看该作者 57楼 发表于: 2012-01-05
深表同情!
离线BG4XGD
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77
只看该作者 58楼 发表于: 2012-01-06
做个记号。。。。。。
离线BG4KLA
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5444
只看该作者 59楼 发表于: 2012-01-07
估计我是也是这样的毛病,接受灵敏度降低和中继相隔200米s表显示2个格,5公里外s表不起。前几天屏幕也出现竖条缺屏了不过这几天又好了,也是车载分离安装。