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RUSSIAN DONETS AM-FM RADIO-GRAMO SCH
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132.4 KB
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AUDIO
SERVICE MANUAL
AUDIO
SERVICE MANUAL
If you get stuck in repairing a defective appliance download this repair information for help. See below.
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Good luck to the repair!
Please do not offer the downloaded file for sell only use it for personal usage!
Looking for similar russian manual?
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RUSSIAN DONETS AMFM RADIOGRAMO AM FM RADIO GRAMO AM-FM
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Relevant AUDIO forum topics:
Sziasztok
Beleszaladtam egy ilyen kütyübe. Szalakábel hibás. Ha valaki tudna sm-et hozzá, vagy annak a nyomorult kábelnek a cikkszámát, neadjég beszerzési forrást nagyon hálás lennék(sini hq kilőve).
http://www.idealo.co.uk/compare/2142139/daewoo-electronics-dca-9100t.html
Előre is köszi.
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!
Üdv Mindenki!
Van egy (ráadásul) saját végfokom.
Bekapcsoláskor kiül pozitív dupla tápfeszre (mivel H osztályú) utána beáll 0V a kimenet, de ez idő alatt a védelem megfogja és megáll. Az összes FET (IRF) illetve tranzisztor (MJ) jó benne.
Ha kiveszem a kapcsoló FET-eket akkor is megcsinálja ugyan ezt (!).
Ha a védelmet leakasztom indításra, majd vissza akkor utána tökéletesen "muzsikál".
Valakinek valami tipp?
A rajz itt is fent van.
üdv.
Mihi
sziasztok:
ha valakinek lenne kéznél ilyen, és megmérné a méreteket, megköszönném.
Bálint
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