JVC 21BA17B problem

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Re: JVC 21BA17B problem

Post by willyboy on Fri Jan 20, 2012 5:40 pm

ah ok sir Ultra... tama po..malaking IC chip po..
maari din kaya FBT naproblem? as per bosing ZANDER
suggestion??

mahirapba mag alis nun... paano maalis ground nun,., how about yung CAp na nkakabit sa Tube?? mahirap ba...

tnkx sa mga help


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Re: JVC 21BA17B problem

Post by ultrasonic™ on Fri Jan 20, 2012 6:22 pm

willyboy wrote:
regarding naman sa leaky rectifier diode.. ito ba yung pag checkmo.. ok sa tester..pero pag kinabit na ..ito palayung may problem..??

considered na din ang ganyan.. or minsan sa tester pa lang msasabi mu ng leak. pag may palo ng kunti sa reverse bias(baliktaran mode) (^_^



willyboy wrote:ah ok sir Ultra... tama po..malaking IC chip po..
maari din kaya FBT naproblem? as per bosing ZANDER
suggestion??

mahirapba mag alis nun... paano maalis ground nun,., how about yung CAp na nkakabit sa Tube?? mahirap ba...

tnkx sa mga help


yapz pwde nga FBT yan. bat sa case mu & based sa statement mu sa previous page.. ung tick sound ay nanggagaling sa Relays not on the SMPT

nxt tym nlng muna natin pgdudahan ang FBT. di nmn siguro bumabagsak ang B+ mu during pinipress ang channel up ?





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Re: JVC 21BA17B problem

Post by willyboy on Fri Jan 20, 2012 6:29 pm

tama po bosing.. sa relay po..
yung tick sound...sa relay po

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Re: JVC 21BA17B problem

Post by willyboy on Sat Jan 21, 2012 1:26 pm

bossing napansin ko po ng mag sukat ako ng voltage uli c956 para sa b+ ... tumaas ito...from 142v naging 170v

bakit kaya nagkaganun?

pianlitan ko na uli mga ng c956..ganun pa din,,,

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Re: JVC 21BA17B problem

Post by willyboy on Sat Jan 21, 2012 1:49 pm

ok na po pla bossing ... back to 143vdc nauli. mahina lang pla battery ng tester ko..diko napansin yung battery warning signal...

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Re: JVC 21BA17B problem

Post by zandertech on Sat Jan 21, 2012 6:40 pm

.opo sir pag leak sa diode pag binaliktad may reading din,..minsan naman khit ok sa tester, pag may load na sya nagloloko,...pero kung relay pala ung nag titick jan dun sa supply ng system ka mag troubleshoot sir,...pag flyback kc sira like nung ginawa ko nagdodrop ung b+ ko kya i hang the fbt b+ and col. Pin aun,.sya fbt nga,.in your case ok naman b+ muh, mga boss d po b mejo mataas ang 145v? 13ov lng kc ang kdalang reading ko sa tcl,..

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Re: JVC 21BA17B problem

Post by ultrasonic™ on Mon Jan 23, 2012 3:12 pm

willyboy wrote:bossing napansin ko po ng mag sukat ako ng voltage uli c956 para sa b+ ... tumaas ito...from 142v naging 170v

bakit kaya nagkaganun?

pianlitan ko na uli mga ng c956..ganun pa din,,,
willyboy wrote:ok na po pla bossing ... back to 143vdc nauli. mahina lang pla battery ng tester ko..diko napansin yung battery warning signal...

anu pala ang tester na gamit mu ? analog o digital ?

kng analog yan. hndi affected ang voltmeter sa weak battery. even wlng battery nkasampak jan makkasukat ka pa rin jan both AC & DC. only the ohmmter ang gumagamit ng batt supply.

minsan sa voltmeter mu yan.. nwawala sa tamang accuracy.. kng baga.. ehh.. hmmpff papano ko ba sasabhin.. mahinang klase ang tester mu "hndi orig".. di knakya ang HV lalot palapit kau sa FBT.

kng digital nmn yan ay affected nga ang batt jan... both lhat ng ranges

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Re: JVC 21BA17B problem

Post by samiel on Tue Jan 24, 2012 12:15 am

try u sukatin collector ng Q571 kung 0 volts ba cya pagka power on mo,if mayron ka above 0,try mo hang yung collector,pero bilis lang mata at pang-amoy mo kung may pagbabago sa oscillation,pero kung zero volt naman malamang power supply pari problem mo.

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Re: JVC 21BA17B problem

Post by willyboy on Tue Jan 24, 2012 2:34 am

mga bossing..digital po tester na gamit ko..
try ko subukan yung sinasabi mo bossing samiel...salamat sa lahat
KUNG hei Fat Choi !

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Re: JVC 21BA17B problem

Post by ultrasonic™ on Mon Feb 06, 2012 6:19 pm


oie belated. kung hei fat choi

tagal ko yatang nwla dito (^_^
iyong Q571 kasali na yan sa protection
kya aware..

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Re: JVC 21BA17B problem

Post by arkin on Wed Feb 08, 2012 1:58 pm

fbt or horizontal trans problem,kdalasan pag ganyan.system protect active,kya my cliking sound.

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Re: JVC 21BA17B problem

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