Service manuals, schematics, eproms for electrical technicians
HIWATT SA-412 SCH
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(PDF)
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80.5 KB
80.5 KB
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1
1
Category
AUDIO
SERVICE MANUAL
AUDIO
SERVICE MANUAL
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Looking for similar hiwatt manual?
Good luck to the repair!
Please do not offer the downloaded file for sell only use it for personal usage!
Looking for similar hiwatt manual?
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- Also known:
HIWATT SA-412 SA412 SA 412
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Relevant AUDIO forum topics:
Hi All,
Does anyone have any experience of working on this radio, its the small Grundig with a leather case designed by F.A. Porsche.
I have recently repaired one with corroded battery contacts which had obviously not worked for many years.
Its now working perfectly on FM, but MW and SW1 and SW2 have no reception, just noise.
If I leave the radio connected to a 5v power supply for many hours it does actually get some reception on AM, but its not consistent. I'm thinking the fault is somewhere in the 'front end', oscillator stage perhaps.
I have checked the AM coils and wave selector switch are OK and everything is visually in excellent condition.
Reading various reviews on this radio confirms they were sold very cheaply in the USA and many customers have complained there is little or no sensitivity on AM, whilst others say it works perfectly. This makes me wonder if there is a common fault on these which someone may know, before I start with my test equipment to try to find the problem...
Any advice would be much appreciated!
Does anyone have any experience of working on this radio, its the small Grundig with a leather case designed by F.A. Porsche.
I have recently repaired one with corroded battery contacts which had obviously not worked for many years.
Its now working perfectly on FM, but MW and SW1 and SW2 have no reception, just noise.
If I leave the radio connected to a 5v power supply for many hours it does actually get some reception on AM, but its not consistent. I'm thinking the fault is somewhere in the 'front end', oscillator stage perhaps.
I have checked the AM coils and wave selector switch are OK and everything is visually in excellent condition.
Reading various reviews on this radio confirms they were sold very cheaply in the USA and many customers have complained there is little or no sensitivity on AM, whilst others say it works perfectly. This makes me wonder if there is a common fault on these which someone may know, before I start with my test equipment to try to find the problem...
Any advice would be much appreciated!
Hello,
i need a Service Manual of this Radio Cube. The Output Volume is to low. The Audio Amp-IC is ok and Output from the Tuner-IC is also OK.
Can somebody help me?
thanks to all!
i need a Service Manual of this Radio Cube. The Output Volume is to low. The Audio Amp-IC is ok and Output from the Tuner-IC is also OK.
Can somebody help me?
thanks to all!
Üdv. Mindenkinek!
Aiwa NSX S211 Hifi torony /nagyon sok Aiwa készülékben ugyanez a CD mechanika van/csak úgy viszi be a lemeztányért ha nagyon picit megemelem a teljes 3 lemezes tányért teljesen kinyitott állapotban így viszont tökéletesen működik.A fekete fogaskerék szorul meg ami közvetlenül csatlakozik a tányérhoz.Nincs kopás,nem látni deformálódást de valamiért a tányér csak picit megemelve megy vissza.Már többször volt ilyen hibán de igazából még nem jöttem rá az okára.Valakinek ötlet?Kössz.
Hello. I’m new on forum. I have blown amplifier digipro 1000 from DB technologies. I found some bad parts, but cannot identify this diode. It has marking 31. In wiring it is d12 and d13. Scheme is there: https://elektrotanya.com/cgi-bin/download2.cgi?uid=19628&cid=1541665480&fid=289613&file=db-technologies_s10_sch_pcb.pdf&x=28&y=15
Thank you in advance.
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