Yaesu FT 857 LCD Display (zebra stripe) repair.

Discussion in 'Ham Made Gear' started by WD8BWW, Nov 27, 2017.

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  1. WD8BWW

    WD8BWW XML Subscriber QRZ Page

    FT 857 control head LCD (zebra stripe) repair. If you have the zebra stripes on your Yaesu 857 Control head and would like a crystal clear display again this would solve that problem. I disassemble the head completely. Clean everything then I install all new electronics (control board with new LCD) from Yaesu. This repair will also fix a defective head. US. $240 + $10SH. I accept PayPal, Credit Card, check, or MO. Phone number 816-223 3246.
     

    Attached Files:

  2. AA7EJ

    AA7EJ Ham Member QRZ Page

    Cool, but calling replacement repair is misleading
    But that don't look like zebra I have seen or been told about.
    That is pretty much "goner".

    The consensus of the FT 857 users group always been exposure to environment - going mobile - is primary reason for this failure.
    The LCD contacts are just by pressure on the supporting PCB - sometime it can be resolved by "more" pressure - the question is how to make it permanent.

    Of course cheap design has always been my view of the problem.

    My zebra is pretty much a moving target , never been mobile but was used on few Field days in humid Texas.
    When I get ambitious and zebra gets 5 or more stripes I'll try the "zip-lock bag filled with rice " trick.

    73 Shirley
     
  3. WD8BWW

    WD8BWW XML Subscriber QRZ Page

    Shirley, you are correct, this is an environment caused failure. Older radios in mobile service in hot summer environment do develop over time the LCD issue. Every repair I have done has been on heads from the southern US and a few from Australia.

    You are also correct, I use the term "repair" because I consider this the repair of the Control Head not the LCD. I have a box of old LCD'd and I have tried to find ways to repair them but never found a lasting fix. This approach of replacing the control assembly also allows me to turn around the heads a one day.

    I also want to add, I love the 857 and her sister the 897. They are amazing in that you have a 100 watt HF rig plus 2 meters and 440 all in a package the size of a CB. They are also easy to fix at a component level for other issues beyond the LCD, I love repairing them.
     
    W3ATV likes this.
  4. WD8BWW

    WD8BWW XML Subscriber QRZ Page

    Toughest refurbish job yes. Way beyond just LCD stripes. Control head was in a vehicle fire. Here are the before and after pictures. Looks like a new part.
     

    Attached Files:

  5. K5LRS

    K5LRS Ham Member QRZ Page

    I have an 857D with the zebra stripe problem. I have run my 857D mobile for three years now and the
    problem developed in the second year. Is your repair a permanent fix for the display or will the problem come
    back at some point because I run mobile and live in Arkansas?
     
    N0MBK likes this.
  6. WD8BWW

    WD8BWW XML Subscriber QRZ Page

    The assembly I replace is an OEM panel assy. from Yaesu. I do know the design of the LCD and flex print looks different than the older ones. Rather that is a forever cure I can't say. I have been replacing these for 3+years and have not heard of a repeat. I mentioned earlier (above) that every repair I've done is from south of the mason/dixon line. Also it is clearly not every radio. I believe that anything that can be done to reduce the temperature inside the car or truck in the height of summer or out of direct sunlight would help.
     
  7. KC6AUP

    KC6AUP Ham Member QRZ Page

    Andy will be getting my FT-897 this week, can't wait to get her back.
     
    N0MBK likes this.
  8. KC6AUP

    KC6AUP Ham Member QRZ Page

    Andy sent my 897 back a few days ago, it looks perfect. image1.jpeg image2.jpeg
     
  9. KC6AUP

    KC6AUP Ham Member QRZ Page

    I spoke to Andy quite a bit over the past 2 weeks about the Zebra Strip problem, and it looks like if you get the radio too hot the strips develop. Andy said almost all the radio's he's repaired have been from Southern States, where the units have been left in a hot car, or sat out in the sun while operating.
     
  10. K5LRS

    K5LRS Ham Member QRZ Page

    Okay, thanks. I was afraid that this would be a recurring problem even if I got a factory repair. I run my Kenwood TS480SAT movile in my Durango and have not
    had any problems with it. Thanks for the input.
    Rich
     

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