Runboard.com
You're welcome.
Community logo


runboard.com       Sign up (learn about it) | Sign in (lost password?)


 
jhzgto Profile
Live feed
Blog
Friends
Miscellaneous info

New Kid On The Block
Global user

Registered: 06-2014
Posts: 5
Karma: 0 (+0/-0)
Reply | Quote
Yaesu FT-890 dead


Hi Chaps,

Bit of a long shot here, but just wondering if anybody here does repairs ?

On Friday evening I bought a perfect working order FT-890 (from a local amatuer.

used it for many hours (receive only) throughout Fri evening & most of the day on & off yesterday.

Late yesterday afternoon I came in (after gardening duties) & flicked the PSU on & then the radio, got only a signal meter light, no buttons, no freq display.

It HAS NOT been cross wired & the PSU works perfectly on my 10m radio @ full 30W TX, so I think it rules that out.

Radio had not even moved, it was literally put in place, wired up & worked for maybe 6-7 on/off sessions, then stopped working.

A quick google points towards a resistor (i think) but I have no idea how to locate it / replace it. Details from google below.

Any advice / help appreciated

John

<<<<google search>>>> The problem was traced to the controller board 5V suppply. The [sign in to see URL] is dropped to 9V (using a high wattage 8.2 Ohm metal film resistor), which is fed to a 7805 regulator to get the 5V out to the controller board. This 8.2 Ohm had overheated, causing considerable damage to itself and the tracks/soldering nearby. Finally it had self-destructed (opened out). Replacing the resistor and doing up the dry solder joints solved the problem.
22/Jun/2014, 4:21 pm Link to this post Send Email to jhzgto   Send PM to jhzgto Blog
 
Spac3Monk3y Profile
Live feed
Blog
Friends
Miscellaneous info

Freebander
Global user

Registered: 06-2014
Location: No Place Like 127.0.0.1
Posts: 242
Karma: 1 (+1/-0)
Reply | Quote
Re: Yaesu FT-890 dead


Found This - Use ]Foxit Reader! To Open.

[sign in to see URL]

Hope ?This Help's In Some Way.

---

22/Jun/2014, 4:41 pm Link to this post Send PM to Spac3Monk3y
 


Add a reply





You are not logged in (login)