Service manuals, schematics, eproms for electrical technicians
MCGOHAN MG20B POWER AMPLIFIER SCH
Type: 
(PDF)
(PDF)Size
372.4 KB
372.4 KB
Page
1
1
Category
AUDIO
SERVICE MANUAL
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 mcgohan manual?
Good luck to the repair!
Please do not offer the downloaded file for sell only use it for personal usage!
Looking for similar mcgohan manual?
Document preview [1st page]
Click on the link for free download!
Advertisements
Please tick the box below to get download link:
- Also known:
MCGOHAN MG-20B POWER AMPLIFIER MG20B MG 20
- 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,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!
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:
Sziasztok! A cimben szereplő őskővület rendellenesen melegszik! A hangerő 0 állásánál kb 20 perc mulva elég meleg mind a kettő hütőborda. Probáltam terhelve 4ohmos szorókkal, ill terheletlenül, ugyanaz a jelenség. Ut/2 beállitva 20.5 voltra de semmi változás. Hangminöség elfogadható, kicsit sztem mélyhiányos de valószinü hogy elöfokban lesz a hiba de az csak a végfokok utàn lesz javitva. Viszont fm -en stabil nem hangolódik, ami nagy szó! Üdv:atis76
Given:
Victor TT-71, neon lamp does not light, speed is lower than normal. This is subsequent some short circuit the owner does inside the device. No further details.
I found out the VICTOR QL7 have the same motor driver amd I downloaded the service manual that I attached here in case this manual is not already uploaded.
Looking at the diagrams I found out that at TP3 (same with pin5 of IC803) instead if that rectangular signal, I have nothing but 5VDC and a negative or positive short spike whenever I'm starting or stopping the motor and
Under the circumstances I suspect IC803 is defective. The bad thing, IC803 is NPC SC8043. Also I wonder if the crystal is fine (except that I wonder what can be wrong with a crystal after some short circuit).
Does anybody have any more suggestion?
Also, where can NPC SC4043 be sourced? Also, a crystal 9.054MHz?
Thanks in advance,
Corneliu
Victor TT-71, neon lamp does not light, speed is lower than normal. This is subsequent some short circuit the owner does inside the device. No further details.
I found out the VICTOR QL7 have the same motor driver amd I downloaded the service manual that I attached here in case this manual is not already uploaded.
Looking at the diagrams I found out that at TP3 (same with pin5 of IC803) instead if that rectangular signal, I have nothing but 5VDC and a negative or positive short spike whenever I'm starting or stopping the motor and
Under the circumstances I suspect IC803 is defective. The bad thing, IC803 is NPC SC8043. Also I wonder if the crystal is fine (except that I wonder what can be wrong with a crystal after some short circuit).
Does anybody have any more suggestion?
Also, where can NPC SC4043 be sourced? Also, a crystal 9.054MHz?
Thanks in advance,
Corneliu
sziasztok--nos azt szeretnem kerdezni,hogy a ponyprog programozo melyik verziojanal van meg a 8582 tipusu memoria,mert 2000-es verzion nincs ez a tipus,esetleg adat kiolvasas szempontjabol valamelyikkel ekivalens-e,mondjuk 24cxx sorozatbol?...udv...
Sziasztok!
Minap szereztem egy gyári MV3 hangfalat (bazinagy...reflex...12,5 Watt 6 Ohm) gyönyörű állapotban. Lelkesen bevittem a nappaliba, ma pedig felhoztam a pincéből az MV3 erősítőmet. Szól mint a vaddisznó, de számok közben "sutyorog"...Nem tudom jobban megfogalmazni, de olyan, mint amikor egy kontaktos potit tekergetnék. A potik jók, lekezeltem őket...a trimmert is... ha tekergetem őket, vagy ütögetem az egyéb alkatrészeket, semmi változás... Valami "rohad"...
Van valakinek gyors ötlete, mielőtt nekiesek???
stonhy
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)!
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