[Premium-Rx] WJ8888 quad 8 fault

[Dov Vardy]

To my best knowledge the 8888 can work without the back-up battery. I have 
used several ofthese radios without the backup battery and they worked well 
except he memory operations.

Dov

----- Original Message ----- 
From: "joe jesson" <jjesson at voyager.net>
To: "Kurt Keller" <kkeller1 at comcast.net>; 
<premium-rx-bounces at mailman.qth.net>; <premium-rx at mailman.qth.net>
Sent: Sunday, December 16, 2012 9:34 PM
Subject: Re: [Premium-Rx] WJ8888 quad 8 fault


>
> Yes, the WJ back-up battery needs to be replaced and also the tantalum 
> electrolytic bypass caps tend to short 0over time.  A bit tricky to find 
> the shorted cap and I usually measure the current on isolated boards to 
> find the shorted caps.
>
>  Joe Jesson
>
> Sent via BlackBerry from T-Mobile
>
> -----Original Message-----
> From: Kurt Keller <kkeller1 at comcast.net>
> Sender: premium-rx-bounces at mailman.qth.net
> Date: Sun, 16 Dec 2012 13:34:45
> To: <premium-rx at mailman.qth.net>
> Subject: Re: [Premium-Rx] WJ8888 quad 8 fault
>
> These units will not work unless the back up battery is in them and at
> full voltage or near. The battery is instrumental
> in the unit booting itself up.
>
>
>
> On 12/16/12 1:08 PM, richardreich at aol.com wrote:
>> Hello to all,
>>
>> I was wondering if there are any folks out there who are familiar with 
>> the WJ8888.
>>
>> I have three of them (all different models) - but they have all stopped 
>> working over the this year.
>>
>> The final one died last week, and I'm desperately trying to fix it 
>> (despite failing eyesight) as its my favorite receiver (yes - even over 
>> the WJ8711, and Ten Tec 340).
>>
>> The back-up battery was caught just in time - although deteriorated, no 
>> corrosion anywhere else.
>>
>> The radio powers-up - but none of the buttons will switch anything 
>> (lights do not change), and the tuning indicator is stuck showing '0' 
>> (zero).
>>
>> Currently I'm going over the power supplies but having problems reading 
>> the diagrams.
>>
>> So I have some questions...
>>
>> Firstly - do these receivers still work with the back-up battery removed? 
>> (or have I caused the fault by removing it)
>>
>> Secondly - any pointers to where/what I should be looking at?
>>
>> Thirdly - is there anyone in the UK who is able repair these wonderful 
>> radios?
>>
>>
>> Thank you....  Richard
>>
>>
>> ______________________________________________________________
>> Premium-Rx mailing list
>> Home: http://mailman.qth.net/mailman/listinfo/premium-rx
>> Help Page: http://mailman.qth.net/mmfaq.htm
>> Post: mailto:Premium-Rx at mailman.qth.net
>> Help Contact eMail:  paul at 8zo.com
>> Home Page:  http://www.premium-rx.org/
>>
>
> ______________________________________________________________
> Premium-Rx mailing list
> Home: http://mailman.qth.net/mailman/listinfo/premium-rx
> Help Page: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Premium-Rx at mailman.qth.net
> Help Contact eMail:  paul at 8zo.com
> Home Page:  http://www.premium-rx.org/
> ______________________________________________________________
> Premium-Rx mailing list
> Home: http://mailman.qth.net/mailman/listinfo/premium-rx
> Help Page: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Premium-Rx at mailman.qth.net
> Help Contact eMail:  paul at 8zo.com
> Home Page:  http://www.premium-rx.org/