Hoffman Amplifiers Tube Amplifier Forum

Other Stuff => Solid State => Topic started by: g-man on November 07, 2023, 08:51:35 am

Title: FM receiver problem
Post by: g-man on November 07, 2023, 08:51:35 am
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Title: Re: FM receiver problem
Post by: shooter on November 07, 2023, 12:42:38 pm
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a pain to scroll for a station every time you turn the unit on.
:laugh:  such are the toils of life


without a schematic, or interest, hard to say, for a few cents and time, try it, you might like it
Title: Re: FM receiver problem
Post by: sluckey on November 07, 2023, 01:04:05 pm
Are you correctly storing the stations?
Title: Re: FM receiver problem
Post by: g-man on November 07, 2023, 01:47:28 pm
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Title: Re: FM receiver problem
Post by: g-man on November 07, 2023, 01:51:57 pm
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Title: Re: FM receiver problem
Post by: NewYorker on November 07, 2023, 05:07:00 pm
g:

Looking back, I realize that the few comments that I've left on this forum have involved more solid-state repairs than tube repairs.  So far, my own work and the comments that I've left here have worked out.

That said, working on PCBs in tight quarters is a dicey proposition.  Go forward only if you're willing to write-off this piece of gear entirely.

It sounds to me like the large cap that you've ID'ed is likely there to keep volatile memory charged while the power is turned off.  At one point I would have looked for a backup battery, but who knows?

60-40, replacing that big cap will fix your issue.  I'd go 70-30 if there were a schematic to look at.

Ed
Title: Re: FM receiver problem
Post by: shooter on November 07, 2023, 06:10:41 pm
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keep volatile memory charged
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if there were a schematic to look at.


SS, especially anything with plastic legged creatures, is near impossible to fix or troubleshoot without a schematic
Title: Re: FM receiver problem
Post by: sluckey on November 07, 2023, 06:24:57 pm
There is a schematic available.
Title: Re: FM receiver problem
Post by: g-man on November 07, 2023, 08:22:25 pm
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Title: Re: FM receiver problem
Post by: g-man on November 07, 2023, 08:33:58 pm
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Title: Re: FM receiver problem
Post by: shooter on November 08, 2023, 02:42:39 am
since it works, before i went n made it not work, I'd probably try something like this



Title: Re: FM receiver problem
Post by: g-man on November 15, 2023, 07:39:06 am
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