President Madison channel change 'pop'

Post by **bluegrass69** » 27 Jul 2012, 19:36

Can anyone tell me if there is a simple way to suppress the 'pop' sound every time I change channels on a Madison. It didn't bother me when I first got the radio but I'm getting a bit fed up with hearing it now. I seem to remember a mention of this on a thread a while back but I haven't been able to find it again. Is it just a case of disabling or removing a transistor which hopefully doesn't affect anything else ?

Post by **Clint** » 27 Jul 2012, 20:08

In the old book of tricks its snip R225

Post by **Clint** » 27 Jul 2012, 20:09

I would like to caveat: I am not sure if there is any detrimental effects

Post by **NightProwler** » 27 Jul 2012, 20:30

'snip'.....BOOM!!!

Post by **Clint** » 27 Jul 2012, 20:33

NightProwler wrote:'snip'.....BOOM!!!

Post by **163TM847** » 27 Jul 2012, 20:40

Oddly enough i did a search for that same info earlier today and couldn't find it either, I am sure it was Ashtec [Paul] who mentioned it And i did it too a Cobra 140 i had here at the time cos the "chuff chuff" each time I changed channel really got on my Moobs, Anyway it did work with no ill effect that i noticed.

I am in the process of getting an old Zachery T i salvaged from a scrap bin up and running, Its all working now and i have fitted an Spectrum FM board and i am getting that slight "chuff" when changing channels which is no real big deal but i would like rid if any one knows.

PC-407AC Board

Post by **FAFFER** » 27 Jul 2012, 21:24

http://www.transmission1.co.uk/forum/vi ... 4&start=15

Post by **bluegrass69** » 27 Jul 2012, 21:56

Thanks Faffer, that's the one I was looking for.

Post by **FAFFER** » 27 Jul 2012, 22:33

Post by **wheel bender** » 30 Jul 2012, 21:35

I love the 'doof doof doof' as I flick through the channels on the madison we have here. I wouldn't change it for the world.......but I also prefer the push button bleep on the delta force turned on and hygain peewit bleeps.....I never claimed to be sane.

Post by **Crusader** » 01 Mar 2018, 12:27

Hi guys,just dug up this old thread to ask... is there a similar mod to stop the popping noise on the Stalker XV (15) base set??.

Post by **cb4ever104** » 02 Mar 2018, 09:35

R198 on the XV looks to be the equivalent of R225 on the Madison , so I'd remove it and see what happens .

Sammy

Post by **The Collector** » 02 Mar 2018, 13:24

Or...you could just cough every time you change channel.

Not very helpful am I

Post by **Crusader** » 02 Mar 2018, 21:50

cb4ever104 wrote: ↑02 Mar 2018, 09:35 R198 on the XV looks to be the equivalent of R225 on the Madison , so I'd remove it and see what happens .

Sammy

Cheers Sammy,will give that a try soon & let you know if it works,cheers for your input

Post by **Crusader** » 03 Mar 2018, 13:08

Just to let you know Sammy i found R198 it is a 100K & is at the top right hand side of the PCB near the back & is sat right next to TR45, i unsoldered one end of the resistor & there is total silence when turning the channel selector so it works a treat!!

Again.. Thank You so much for your help on that one.

Regards,Shaun

President Madison channel change 'pop'

President Madison channel change 'pop'

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