Legs ar corroded off although otherwise board is quite clean. No scope fast enough unfortunately, I think it must be in tens of Mhz, and microprocessor is Bosch 30302 as I wrote so this also is dead end. Looks to me that most realistic way is to bodge some wires to it which I've done and ECU starts, car still not running but that to my mech. Not the most reliable repair to my liking but it's at least something.
Thanks all for suggestions.
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Need help identifying crystal
Got VW Bosch ECU with rotted away crystal oscillator and can't find frequency for it, it drives Bosch 30302 chip for which there is also no any datasheet. Markings on it says
453NDK9X.
and there is nothing on internets about it that I can find....
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Re: Pioneer vxs 456
Are you sure that it has universal mains transformer? Because hi-fi engines service manual has 120V version only, and there is no switchable primaries on standby nor main transformers.
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Re: Onkyo TX-NR828 - Repair assistance wanted
That is something above 60 degrees, for transistors with upper working t at 150°C it's nothing. I once had some Rotel with completely burned off painting on output transistor emiter resistors, all measured perfectly ok. Just replaced 2W original ones with oversized 5w for peace of mind but that amp went bloody hot no matter idle or full throtle, that was by design....
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Re: Aiwa ad-wx 717 belt measure
You can find some sizes in old Marrs Communication catalogues but they often can be misleading, and honestly I don't think that those kit prices are exaggerated.
And of course this^...Last edited by jons; 02-25-2023, 05:40 AM.
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Re: Aiwa ad-wx 717 belt measure
Webspareparts is my go-to shop for belts, especially for AIWAs where thickness and overall precision to original sizes is crucial.
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Re: Sony STR-DH520 no optical input
Either that digital input receiver IC is dying or there's some cold solders on that input board would be my first guess.
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Re: capacitor value too high
Oh yes, you're right in this aspect /still can't wake up/
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Re: Post your system.......
That somewhat reminds me of my mac mini...
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Re: Logitech Z506 with corrosion
It's mostly glue's chemical composition which reacts with natural moisture in air, nothing to do with heat. And that glue manufacturers used from early 80's, here some 1981 HK amplifier which I had recently but examples are countless....
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Re: Tele-master AS-20 amplifier. No output sound, just noise
If you can volume that noise (what kind fo noise?) up/down then problem lies in the preamp section. Post full innards/back pics, maybe it has DIN inputs and you are using wrong cable?Last edited by jons; 02-16-2023, 10:00 AM.
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Re: Corsair SF600 - Everything ok but no spining
Yes, it's perfectly normal, it starts to spin after reaching 50% (or so) load or some temperatures. And that's not for energy saving but quietness.
Or they just say to pot Hi?...
Last edited by jons; 02-15-2023, 11:09 AM.
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Re: iMac A1311 extrange behaviour
Reball never ever worked on these problems (for longer than 1-3-6 months that's it), and that problem is more than decade old, don't rely on youtube or other internet gurus.
Who don't...
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Re: best cheap/free scores 1.1
Probably stupid question but is there led activity when you press eject? Maybe just dead button? Because that's quite rare when optical is so dead it even don't recognize simple commands....
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Re: Logitech Z506 with corrosion
Clean all that yellowish stuff also because it will corrode anything underneath. It is the same as brown you cleaned, only in second not third phase of transformation.
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Re: best cheap/free scores 1.1
Actually that was just temporarily one just to turn it on and test preliminary, already searching for 5V and 12V heavy enough psu. More dissapointment came when I discovered that cheap Radeon 9700 I got earlier has artefacts, and X1950 pro code 10 on one of two gpus in device manager......
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Re: best cheap/free scores 1.1
Caps are fine! I was worried also until seen it in flesh.
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Re: best cheap/free scores 1.1
Sounds like rollers or roller clutch.
Anyway, on last month got MS-6501 dual socket A board with adaptec sata controller and bodged geforce 6200 on it for agp testing purposes, Dell 27" 2k monitor with random blackouts and fully working Aiwa AM-NX9 netMD player with bunch of disks....
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