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Author Topic: jvc c-1320 ,tuning problem  (Read 325 times)

Offline mizrach

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jvc c-1320 ,tuning problem
« on: April 28, 2012, 07:11:51 AM »
ano po kaya problema nito mga master..bigla pong mawawala ang picture sa lahat ng channel, kahit sound mawawala din..
  Suspect ko po yung tuner,kaya resolder ko sya..ala pa ring effect.
  Posible pa pong cause nito mga master? Ok po mga voltage reading.

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jvc c-1320 ,tuning problem
« on: April 28, 2012, 07:11:51 AM »

Offline MX45

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Re: jvc c-1320 ,tuning problem
« Reply #1 on: April 28, 2012, 08:02:25 AM »
ano po kaya problema nito mga master..bigla pong mawawala ang picture sa lahat ng channel, kahit sound mawawala din..
  Suspect ko po yung tuner,kaya resolder ko sya..ala pa ring effect.
  Posible pa pong cause nito mga master? Ok po mga voltage reading.

paki check muna sa A/V in kung okay. ngayon kung ok sa A/V maaring sa part nga ng tuner ang may perblema or measure mo ang supply sa tuner.
Gawin mo ang nais mo, sundin mo ang gusto mo dahil ikaw o ang sarili mo ang hari ng yung kagustuhan...

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Re: jvc c-1320 ,tuning problem
« Reply #1 on: April 28, 2012, 08:02:25 AM »

Offline mizrach

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Re: jvc c-1320 ,tuning problem
« Reply #2 on: April 28, 2012, 08:35:42 AM »
ala po itong A/V input..TV lang..ok nman boltahe sa tuner..tnx po sa reply

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Re: jvc c-1320 ,tuning problem
« Reply #2 on: April 28, 2012, 08:35:42 AM »

Offline mcleod

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Re: jvc c-1320 ,tuning problem
« Reply #3 on: May 01, 2012, 02:08:05 PM »
ano po kaya problema nito mga master..bigla pong mawawala ang picture sa lahat ng channel, kahit sound mawawala din..
  Suspect ko po yung tuner,kaya resolder ko sya..ala pa ring effect.
  Posible pa pong cause nito mga master? Ok po mga voltage reading.

baka gusto mo ng magpalit ng mga ecaps especially near tuner? baka gusto mo magpalit ng crystal 3.5 Mhz and 4.43 Mhz or higher basta yung crystal diyan sa tv mo. baka gusto mo ding i-check ang inductor / coil mo near tuner? baka gusto mo din mag - check ng mga resistors and diode? yan lahat eh kung sinisipag ka at suggestion lang po.
What makes you think, we owe you an answer? Ask and you shall receive... but all in the proper time.

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Re: jvc c-1320 ,tuning problem
« Reply #3 on: May 01, 2012, 02:08:05 PM »

Offline mizrach

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Re: jvc c-1320 ,tuning problem
« Reply #4 on: May 02, 2012, 07:23:20 AM »
^^na check ko na po lahat ng nabanggit nyo master..direct sub na rin ako lahat ng ecaps around tuner.pati yung Rf/If ic,.tuner na cguro  ito master..tnx po sa reply.

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Re: jvc c-1320 ,tuning problem
« Reply #4 on: May 02, 2012, 07:23:20 AM »

Offline adfa4c

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Re: jvc c-1320 ,tuning problem
« Reply #5 on: May 02, 2012, 07:46:51 AM »
^^na check ko na po lahat ng nabanggit nyo master..direct sub na rin ako lahat ng ecaps around tuner.pati yung Rf/If ic,.tuner na cguro  ito master..tnx po sa reply.

be sure na kumpleto at tama ang mga voltage mo sa tuner like Vt(tuning voltage 33v) 12v or 9v or 5v supply ng tuner(depende ang voltage kung bago o luma usually kc kapag luma 12v or 9v at pag modelo 5v) mas maganda kung i-post mo ung mga pins ng tuner at voltage reading.
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Offline J@M

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Re: jvc c-1320 ,tuning problem
« Reply #6 on: May 02, 2012, 07:57:37 AM »
Agree sa taas bka my voltage nga yan ndi aman sakto..Tuner mo sis nasubkan mo nb resolder bka medyo kawang na kc medyo old school na din unit na yan.
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Offline mizrach

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Re: jvc c-1320 ,tuning problem
« Reply #7 on: May 02, 2012, 02:01:33 PM »
ok po 12v at 5v sa tuner.pwd po kayang direct sub ng tuner ng di nya kaparehas o ka modelo bsta parehas pin out at supply, natry nyo n b mga master?

Offline DSM_elektronix_shop

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Re: jvc c-1320 ,tuning problem
« Reply #8 on: May 02, 2012, 02:05:08 PM »
nasubukan mo na rin ba icheck ang if o phitin ang if...
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Offline mcleod

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Re: jvc c-1320 ,tuning problem
« Reply #9 on: May 02, 2012, 02:28:49 PM »
baka gusto mo ng magpalit ng mga ecaps especially near tuner? baka gusto mo magpalit ng crystal 3.5 Mhz and 4.43 Mhz or higher basta yung crystal diyan sa tv mo. baka gusto mo ding i-check ang inductor / coil mo near tuner? baka gusto mo din mag - check ng mga resistors and diode? yan lahat eh kung sinisipag ka at suggestion lang po.
^^na check ko na po lahat ng nabanggit nyo master..direct sub na rin ako lahat ng ecaps around tuner.pati yung Rf/If ic,.tuner na cguro  ito master..tnx po sa reply.

na-check mo pero nasubukan mo na palitan? may preset ba ito(yung mukhang philips screw na plastik diyan malapit sa tuner section)? ano main ic nito?

linawin natin: ang status nito: snowy at may nakakabit na antenna? or nagblublue back? wala din sound.

nawawala or wala na talaga?
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Offline comtronixs

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Re: jvc c-1320 ,tuning problem
« Reply #10 on: May 02, 2012, 09:34:15 PM »
v.c.o pakipihit :)

Offline adfa4c

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Re: jvc c-1320 ,tuning problem
« Reply #11 on: May 03, 2012, 12:48:25 AM »
ok po 12v at 5v sa tuner.pwd po kayang direct sub ng tuner ng di nya kaparehas o ka modelo bsta parehas pin out at supply, natry nyo n b mga master?

pwede basta magkaparehas ng pin ska ung supply sa tuner kung di tama ung pin orientation gamitan mo muna ng wire sa connection para matesting mo lng kung tuner talaga, maganda kc ma-clear mo muna na buo ung tuner bago ka mag-pihit ng IF kc bka malito ka kung di mo pa gamay ang IF ngayon kung kabisado mo na magpihit ok lng pero kung halimbawa nga na nagpihit ka na at wala pa ding signal at di mo naibalik ng tama o sobrang layo na ng pihit mo at nag palit ka ng tuner sabihin natin na sira ang tuner dapat may picture na pero dahil di na nkatama ung IF pwedeng wala ka pa din makita na picture at pwedeng malito ka na kung saan ang sira, siguro depende pa di sa experience mo. Ngayon kung gusto mo din pihitin siguro dapat hinay-hinay lng bka mpa-sobra maganda din kc kung systematic ang troubleshooting.Ska dapat ma-explain mo ung kumpletong deskripsyon ng trouble para magka-ideya ung mga master natin.
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Offline mizrach

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Re: jvc c-1320 ,tuning problem
« Reply #12 on: May 03, 2012, 09:30:23 AM »
di ko pa nasubukan  galawin o pihitin if o yun vco bka masobrahan ko,pero try ko rin mga master..gnito po ang senaryo ng trouble nya: di b pag on,magkakaroon sya picture,ala pa 2seconds mawawala sya at mag blueback ala din sound..pag lipat uli ng ibang channel ganun uli,blueback at ala din sound..kung baga po biglang mawawala ang signal.

Offline DSM_elektronix_shop

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Re: jvc c-1320 ,tuning problem
« Reply #13 on: May 03, 2012, 11:01:59 AM »
VCO if yan adjusin mo lang sis...pero dahan dahan lang baka bumigay maging bakla ang ferite core sa loob...nababasag yan pag malakas pihit kaya ingat ka lang sis...

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Offline adfa4c

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Re: jvc c-1320 ,tuning problem
« Reply #14 on: May 03, 2012, 12:51:33 PM »
di ko pa nasubukan  galawin o pihitin if o yun vco bka masobrahan ko,pero try ko rin mga master..gnito po ang senaryo ng trouble nya: di b pag on,magkakaroon sya picture,ala pa 2seconds mawawala sya at mag blueback ala din sound..pag lipat uli ng ibang channel ganun uli,blueback at ala din sound..kung baga po biglang mawawala ang signal.

klaro yan sa IF na tama mga master natin, ingat lng sa pag pihit hinay-hinay.
"spooky action at a distance"

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Re: jvc c-1320 ,tuning problem
« Reply #14 on: May 03, 2012, 12:51:33 PM »

 

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