Service manuals, schematics, eproms for electrical technicians

GELOSO G516 AM RADIO RECEIVER SCH

AUDIO - SERVICE MANUAL
Type: (ZIP)
Size
173.6 KB
Page
---
Category
AUDIO
SERVICE MANUAL
If you get stuck in repairing a defective appliance download this repair information for help. See below.
Good luck to the repair!

Please do not offer the downloaded file for sell only use it for personal usage!

Looking for similar geloso manual?
Document preview [1st page]
No preview item


No preview item for this file.

Possible causes:
  • No preview picture generated yet.
  • It is not a pdf file.
Advertisements
Please tick the box below to get download link:
  • Also known:
    GELOSO G-516 RADIO RECEIVER G516 AM 516
  • If you have any question about repairing write your question to the Message board. For this no need registration.
  • If the site has helped you and you also want to help others, please Upload a manual, circuit diagram or eeprom that is not yet available on the site.
    Have a nice Day!
  • See related repair forum topics below. May be help you to repair.
Warning!
If you are not familiar with electronics, do not attempt to repair!
You could suffer a fatal electrical shock! Instead, contact your nearest service center!

Note! To open downloaded files you need acrobat reader or similar pdf reader program. In addition, some files are archived,
so you need WinZip or WinRar to open that files. Also some files are djvu so you need djvu viewer to open them.
These free programs can be found on this page: needed progs
If you use opera you have to disable opera turbo function to download file!
If you cannot download this file, try it with CHROME or FIREFOX browser.
Translate this page:
Relevant AUDIO forum topics:
NAD 3140 amplifier - power transistors getting hot
This one had been sitting in a barn for years. Powered it up and the large power transistors on the heat sink would get hot
after a time....and the heat sink would also get quite hot. Speakers sounded like they had some DC on them....with a loud thump

Found the manual on Hi-Fi engine,
http://www.mediafire.com/file/b8mlsu7q3pz0bvf/hfe_nad_3140_service.pdf/file ]
and saw a video on youtube saying lots of capacitors dry out
due to their locations near resistors that get very hot, I guess sorta a poor
design. Went in and recapped almost the entire
product save for the (4) large 50V PS caps which appear to check ok.None of
the high power or driver transistors
mounted to the main heat sink were shorted..

Powered on but no audio, and noticed the fuses to Bridge D805 were melted open.
I believe they were ok before.
Replaced them and they started to light up like fiilaments, so shut down,
removed the bridge D805, then checked it, its ok.

There is about a 16 ohm short on the + / - lands where the bridge was. It
seems like something I did maybe is causing this,
like a capacitor in backwards, which I am doing alot of lately for some
reason.

Turns out, yep I put C805 (470/ 63) In backwards ! Capacitor still checks
ok, so will re-use it.

Short is still there though Im guessing R803 is adding in 5.6 ohms or so,
that means theres a 10 ohm short someplace. Q801, 802 arent reading short,
and looks like this becomes a +43V ps feed.

Any ideas out there on what to check next? I am guessing this cap in
backwards caused the voltage applied to a component to be
reverse and its shorted. Or would this be normal with a reversed cap installed,
and putting it in right would be how to fix it?

Steve Hearns
Technotronic Dimensions [USA]
WWW.TECHNOTRONIC-DIMENSIONS.COM
 
grundig sonoclock 54-sc 5304 dcf év-dátum beállítási hiba
Köszöntök mindenkit.
Először is elnézést ha nem jó a kategória.
A bajom ezzel a készülékkel az, hogy a dátum beállítás hibás. Az is érdekelne miért nem áll be magától DCF-el, kézzel kell beállítani.
Vissza a dátumra, beállítom kézivel év-hó-nap és csal. most ugye 2020.03.06 a van, ha ezt beállítom akkor szombatot ír holott péntek van. Ha egy évet visszamegyek az időben akkor péntek.
Valaki tudna ebben segíteni: Papírjait már letöltöttem.

.https://www.google.com/search?q=grundig+sonoclock+54-sc+5304+dcf&ie=utf-8&oe=utf-8&client=firefox-b

T, kipcsak
Sanyo JT 2503 tuner hangolóegység tekercsek menetszáma, mérete kellene(működik)
üdv: fenti típusú tuner kissé hiányos, valakinél már járt a készülék visszahangolásra, nincs benne az oszcillátor és modulátor tekercs. Próbáltam a szokásos 3 menet-5 menet (4menet-6 menet)megoldással, nem igazán jó. A tekercsméreteket jó lenne tudni, hátha valakinél van otthon, csak az alját kell lecsavarozni. Varicap hangolású,rajzot nem találtam róla.A tranzisztorok 2SC535 és 2SC930. A sávszélesség beállítható, de a modulátort nem tudom rendesen beállítani. Az FM-kf IC LA 1231, a MPX LA 3350. Bálint
autó dvd
jó napot...lenne nálam egy autórádió dvd,seltronic ksd/csd4000,lejátszik mp3-at,jpeg,de a DVD lemezeknek csak a hangját adja,miközben a kép helyett,ez a felirat látható: warning! enjoy sound only while driving....na,kerem,mivel angolból egy betüt nem tudok,nem értem se a szöveget,se a hibát...erre kérnék segitséget...köszönettel...üdv!
Similar manuals:
If you want to join us and get repairing help please sign in or sign up by completing a simple electrical test
or write your question to the Message board without registration.
You can write in English language into the forum (not only in Hungarian)!

E-Waste Reduce