Hi guys, i have an old Sony receiver str k850 that won't memorize preset radio stations no more, i have to manually put in frequency in order to tune in station ,but if i try to set up another frequency it looses the first one and so on, this might be old caps, what you guys experts on radios think i should look for, thanks
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Last edited by ivtec; 11-08-2021, 11:13 AM. -
Re: how to repair sony str k850 won't memorize radio stations no more
open it - see whats inside.
it probably has a (leaked) battery or capacitor to maintain the memory -
Re: how to repair sony str k850 won't memorize radio stations no more
I looked at the service manual and could not see any memory backup (ie large cap) I suspect the data is stored in eeprom, make sure you are saving the station according to the manual, or you could also try a reset to clear any data that is already stored (procedure is in the owners manual)Comment
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Re: how to repair sony str k850 won't memorize radio stations no more
I did the factory reset some time ago and it did not set the tuner to preset stations, i think i'll not tough this thing and will input station manually if needed every time i need it which is rarely ,i only tune in one station anyway,as long it doesn't affect other receiver functions it's fine, besides i have another Str DE335 older but still works fine,thanksLast edited by ivtec; 11-08-2021, 02:35 PM.Comment
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Re: how to repair sony str k850 won't memorize radio stations no more
link the service manualComment
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Dear all,
I have this old radio clock by Sony from the early 80s, I guess. The clock display works, but is dim, the function board appears to be OK - but the radio unit shows no signs of life. It doesn't produce a single noise, crack or anything from either FM or AM band. It's like it doesn't even power up.
i opened the radio and it is full of some TRACON gray capacitors. They only have their negative strip printed, voltage and capacitace markings - no series, no temperature marking, nothing else.
My question is, do you know of this brand of capacitors and how bad are... -
Hi forum members,
In the past i have had many helpful hints from generous forum members in diagnosing and solving issue related to most of my electrical things.
Fyi, i have been keeping this unit of Sony radio cassette player as the cassette belting has worn off but the radio has been working fine before. Recently, out of a sudden i found out i can't get any radio reception at all (no signal from FM,MW or SW band) except some buzzing warp noise from the speakers.
I opened the casing inside and checked for any dry solder, burned component or loose wires... -
hi
ive got a modern digital clock radio approx 15yrs old
my question is how long can a clock radio or a simple radio last ss farcas operating hours?
since elec components have limited hour lifecspan i would imagine the radio or clock radio would eventually fail.
the reason i ask is because i have my clock radio on radio function 24/7 for the past 7 years and its still working fine....i leave the radio on ..never turn off past 7years...thats approx 60000 hours
it uses very little power just a few watts i would imagine that may have something... -
Hi,
I am repairing a DeWalt DC011 radio. I found that the secondary coil of the transformer had gone open circuit and the amplifier ic had shorted. I have replaced both but I can’t tune it in to a station and the static is very quiet. Any help is greatly appreciated. Thank you
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Hello All,
I have an issue with my Majority PETERHOUSE GRADUATE Internet Radio, it keeps rebooting at the boot logo Welcome screen. I have an another forum active in other website but due to lack of response I am posting the same here. I am positing a link below that has pictures including all the troubleshooting I have tried, appreciate if someone can take a look and give me any suggestions.
https://www.hifivision.com/threads/m...-screen.98243/
Troubleshooting Summary: Majority Internet Radio - Flash Chip...
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