Maker Pro
Maker Pro

JVC AV56WP84; Relays Click During Power Up, not picture, no sound.

K

Kev

Jan 1, 1970
0
I got this set from a client and the H-OUT Q522 was missing so it was
quite oblivious someone had been into it before me. I ordered and
installed a new Q522 and also replaced T501 and both STK394-220 ICs.
Now when I press the power button I can hear the relays click
repeatedly and after about 30 seconds or so they stop and the set seems
to go into some sort of protection mode. Does anyone have any tech
tips that could save me some troubleshooting time? The self check
display LED does not blink to give any indication of a problem.

JVC AV56WP84 Rear Projection Television

Thanks,

Kevin
 
J

Jason D.

Jan 1, 1970
0
I got this set from a client and the H-OUT Q522 was missing so it was
quite oblivious someone had been into it before me. I ordered and
installed a new Q522 and also replaced T501 and both STK394-220 ICs.
Now when I press the power button I can hear the relays click
repeatedly and after about 30 seconds or so they stop and the set seems
to go into some sort of protection mode. Does anyone have any tech
tips that could save me some troubleshooting time? The self check
display LED does not blink to give any indication of a problem.

JVC AV56WP84 Rear Projection Television

Thanks,

Kevin

Kevin,

There are 2 ICP fuses in parallel on the power supply for convergence
power also for somewhere else as well and remember to put jumper on
the DVI or HDMI module next time you plug in without back panel off.

There is very rare few that needed HV leads to the suction cups
sleeved with silicone sleeves & HV RTV sealed all over each suction
cups and both ends of sleeves, this usually shows up as repeat blowing
HOT.

Get the bulletin kit along with HV RTV from JVC.

Cheers, Wizard
 
K

Kev

Jan 1, 1970
0
On the Convergence out PWB I found two CP components CP902 & CP801;
they are not in parrallel with each other. On the Power & Def PWB I
found one CP component CP951 which protects two 28 volt outputs in
parallel with each other. It has been many years since I repaired a TV
so I am assuming I can check these circuit protector components with a
meter? These components are probably open? This would cause the
relays to chatter?

So first step check circuit protectors and replace if necessary. Find
service bulletin from JVC and implement it if necessary.

Kevin
 
Top