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emmanuel parcon Posted on Apr 04, 2013
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JVC flatscreen tv model Number AV-21mt35 with vertical interference? how to solve this problem?

Dati pumuputok dahil nakadikit ang high tension wire sa tube.. pinutol ko at dinugtungan at binalot ng insulator, gumana naman subalit meron putol putol na vertical lines na parang interference. paki help naman po sa mga mababait nating kakosa jan

1 Answer

The Knight

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  • JVC Master 76,851 Answers
  • Posted on Apr 04, 2013
The Knight
JVC Master
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Joined: Oct 14, 2010
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It will be best to replace its Line Output Transformer [LOT]. It is not good to join the broken EHT wire. EHT arcing cannot be stopped by using glue.

3 Related Answers

Anonymous

  • 1284 Answers
  • Posted on Feb 15, 2007

SOURCE: JVC AV-20F476

Intermittant issues are always the hardest to troubleshoot. It could be a loose connection or a component that breaks down under load or thermally.

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Anonymous

  • 934 Answers
  • Posted on Nov 13, 2007

SOURCE: JVC AV 35750 single horizontal line

Jeremey,
It's ring cracks on the solder joints of the vertical IC... IC421 i mounted to a small heat sink on the board. With the unit off and unplugged remove the board and locate IC421 (LA7832) and closely examine the pins connecting this component to the foil side of the board. You'll notice small rings around the footings that are actually open cracks in the solder, caused by heating and cooling over a period of years. Simply and carefully reflow some solder over these cracked joints, careful not to get the ic too hot in the process, and put it back together.. That should sole the problem...
Another problem we encounter a lot in the vertical deflection circuit of this unit are the two feeder caps C424 (100UF/35V) and C425 (470uf/35v).. If you're already there you might want to go ahead and replace these as well - save taking the back off again if they go bad..
Bill

Anonymous

  • 57 Answers
  • Posted on Feb 28, 2009

SOURCE: RED BLINKING TIMER TV WONT TURN ON

Page 40 on the PDF link below may help - Ask me if you need further assistance.
Thanks
Len
http://resources.jvc.com/Resources/00/00/99/51798Cien.pdf

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0helpful
1answer

Can I have a diagram for TV JVC Model AV-21MT35? Anybody can help, thanks in advance.

If you wish to get some details; check the site linked here. Pull up older posts. Surf the site with patience. http://electronicshelponline.blogspot.com/
Circuit diagrams of many popular brand TVs are given.
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Anu po pwd na ikabit na i.c no. sa jvc model av-21mt35

If you wish to get some details; check the site linked here. Viewing it in "Mosaic" or "Magazine" will make surf easy Pull up older posts. Surf the site with patience.
http://electronicshelponline.blogspot.com/
1helpful
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My tv is JVC model # is AV-21MT35 the new technician needs the schematic diagram. my old technician lost the parts to be replaced one is for the horizontal out and the other one regulator...

You can use [BU508AF or C3886A OR D5702] as horizontal output. All of these transistors are equivalent to each other, and is commonly used with RCA TVs. But, if there is a fault with its Horizontal output Transformer, {LOT}, none of these transistors won't last long. They will heat up excessively, and will get shorted. Therefore, check whether the LOT has any trouble. Ask your technician. He will be sound enough how to check it. Mo multimeter check is possible with this component. His experience in service work will help him to troubleshoot this problem.
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I have a 1 yr old samsung flat tv that has a sound but no picture..how can i fix it. i am in an isolated island here in basco, batanes philippines with no experts in repairing flat tv.pls advice. tnx

Hi,
Kung LCD TV ang unit mo, 3 ang dahilan kung kaya la kang picture.
1. Me pundido kang backlight - kapag me pundido kang backlight kusang pinapatay ng power supply ang inverter board para hindi ma-overload kaya la kang picture. Maaring mong i-check ang backlight, ang palatandaan na ito ay pundido ay kapag me itim sa magkabilang dulo.
2. Sira ang inverter board - ang inverter board ang nagbibigay ng high voltage sa backlight. Kapag sira ito, natural d gagana ang backlight. karamihang sira ng backlight ay ang high voltage transformer, driver transistor o kaya me open na fuse/fusible resistor.
3. Power supply- kapag la supply voltage sa inverter board, la ka rin picture. Mas maganda kung ito ang sira dahil mas madali makhanap ng pyesa dyan sa lugar mo di katulad ng 2 nauna.
Kung me kakilala kang technician dyan malapit sa lugar nyo, patingnan mo yong mga sinabi ko. Maari ring dahil sa loose connection kaya la ka picture o kaya bad solder joints.
Salamat kapatid sa pagboto 4 na hinlalaki.
Jdvillanueva
Las Pinas NCR.
0helpful
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AV-20920 thin horizontal line

hi, usually the cause in jvc tv is, a bad contacts on the vertical chip leges. you should solder those contacts. another option is to change the vertical chip . more rare is a missing of the 27v voltage that goes to the chip. in that case you should check the port of the high voltage transformer.
good luck!
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Nagpapatay patay ang fone ko hndi ko alam kong ano ang sira

Hi Ruby kadalasan maengkwentro ko pag patay-patay yong celphone baterya ay sira na,kung sakali bago ang baterya at segurado ka kung hindi ka segurado palitan muna ng bago.Minsan kasi bago mong bili sira pala factory defect ba kailangan original ang bilhin mo or branded ba.Bago na ang baterya ganon parin pa patay-patay parin ,kailangan munang e reset ang setting para babalik sa dati, gawin mo to GO TO> MENU> DEFAULT FACTORY SETTING.Kapangitan lang dito mabubura yong mga save file messages mo kailangan ilipat mo .If hindi mo to magawa dahil patay-patay hindi makaperform ang celpon mo.Kailangan munang pupunta ng cellshop para e flash ang software ng phone mo yan ang nalang option dahil kompleto sila sa gamit mga kable gagamitin pag flash.Meron kung alam saan magdownload ng software para flashing ,kailangan munang kable para makonek sa celpon mo ang data.Just click this site; http://monk3ybidzness.blogspot.com/2009/01/unlock-your-nokia-mobile-phone-with.html

Ibang patungkol celpon problem;
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Feel free to ask whatever the result.
Hope it may help you;

Regards:
VOTIT

taga saan ka ruby?
Jan 28, 2009 • Nokia 3650
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A premium problem

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Mula nito hindi naako pumassok sa lounge,nakakainis lang minabuting kunalang na huwag pansinin. Lagi ang komento nag googles copy paste,hindi daw ako technician. Maraming top expert nag googles din,si maiksi ,ginko nakasabay ko to sila,tinago ko lang sa premium.Si maiksi lang parang allergic sa akin.Madalas kaming magkasabay,mahilig siya sa maiksi sagot ,parang one liner lang,kaya insecure siya ,baka malaman na siya mahilig mag "place holder",pagwalang makakasabay,saka banatan niya maraming sagot at ang kustomer hindi nag repost kuha na niya. Lagi siyang sumisigaw ng place holder,totoo pala ang kasabihan "kung sinong nagsisili,siya ang hangan". Seguro kung hindi ako technician hindi ako makapasok dito disgrasya lang, ito ang dahilan ;
http://www.fixya.com/support/t668287-burn_resistor Naghahanap ako ng free download schematic diagram.Nagkataon iyon nagpapagaling ako sa operasyon ko sa gall blader.Seaman ako 3RD marine engineer,alam muna pag ang marino nasa lupa ubos talaga lalo na sa kalagayan ko nagkakasakit.May electronics shop ako sa Imus cavite isa at dalawa dito rin sa cebu .Sa pagka ngayon inabalahan ko ay "satellite unlimited" walang load-load,kuha ko diyan sa tondo 5,500 tapos ibinta ko dito sa cebu 25 to 20 thousand,sa bohol ,leyte at saka mindanao.Ang gusto ko sa fixya updated sa repair at makakuha ako ng idea.Sory talaga Ben at saka kay Marked ok lang yong koment mo...
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Oct 01, 2008 • Watches
0helpful
1answer

Horizontal ines---original post got wiped. Sorry.

leaky cap(s) in vertical circuit. shouldn't be more than $125 (plus taxes) parts and labour
0helpful
2answers

JVC TV

civilman, the first set has either no high voltage or is collapsed vertically, until someone checks for high voltage there is no concrete answer, the AV27730 is vertical collapse from your description, either the voltage to the vertical IC is missing or the vertical IC has failed, not a big deal cost-wise, hope this answers your questions, if not e-mail me back, good luck, BMW Rider
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