[TechAssist] Re: Philips 25TR12 C102 chassis 25P606-OOAA
- From: walter wood <wwood_38478@xxxxxxxxx>
- To: techassist@xxxxxxxxxxxxx
- Date: Sat, 3 Aug 2002 14:18:39 -0700 (PDT)
Larry, IN STANDBY, Q 400 Collector 162volts.
Base 14.4 volts and emitter 14.4volts
The only standby readings I have on Q403 is the
emitter; 6.6voltsthat ties directly to emitter of
Q404 and Collector Q410.I also have noted 15.6 vdc
on the cathode of Z405.
I took these on a working set to help me
troubleshoot.
Do you have Jeff's tips program ar WinsTips?
HTH
Walter
--- "Larry E." <videotech@xxxxxxxxxxxx> wrote:
>
> Matt, base of Q400 in standby should be 15v
> right? I`m losing it at
> Q403`s emitterr and Q404`s
> collector, I believe I should have roughly 7 v
> there and I only have 2.3
> v. Pulled and ohmed
> R406 & 402 and their both good, Larry
>
> matt sherer wrote:
>
> >Larry,
> >check pin 4 of IC410 for 130v. Then check base
> of Q400 for 130v.
> >Gear Guy
> >Electronic repair
> >A/V systems design, maintenance and installation
> >AMX programming
> >Matt Sherer, CET
> >1411 Honeysuckle Lane
> >Champaign, IL 61821
> >(217)356-9479
> >m.sheer@xxxxxxxxxxxxx
> >
> >----- Original Message -----
> >From: "Larry E." <videotech@xxxxxxxxxxxx>
> >To: <techassist@xxxxxxxxxxxxx>
> >Sent: Saturday, August 03, 2002 3:15 PM
> >Subject: [TechAssist] Re: Philips 25TR12 C102
> chassis 25P606-OOAA
> >
> >
> >>Matt, thanks for the help, could not find R4170
> or a Z415, this is what
> >>I have in standby;
> >>pin 3 of IC410 = 165 v
> >>E of Q403 = 2.3 v
> >>E of Q400 =15 v
> >>R 417, R305, L417 & 418, all = 1.2 v
> >>D415 = 2.1 v
> >>
> >>Larry Eastman
> >>American TV & Electronics
> >>Crystal River, FL.
> >>
> >>matt sherer wrote:
> >>
> >>>Larry, here are some things to check. I have
> the print for a P6 chassis.
> >>>
> >>>pin 3 of IC410 should be 155v
> >>>emitter of q403 should be 8vdc
> >>>emitter of q400 should be 129v
> >>>check q402, q420, z405, d421 in the
> standby/startup switch.
> >>>R417 should have 5vdc
> >>>R305 should have 5vdc(standby source)
> >>>L417 should have 5vdc
> >>>L418 should have 5vdc
> >>>z415 should have 5vdc on cathode
> >>>R4170 should have 8vdc
> >>>If you need any more info, feel free to call
> me.
> >>>
> >>>Gear Guy
> >>>Electronic repair
> >>>A/V systems design, maintenance and
> installation
> >>>AMX programming
> >>>Matt Sherer, CET
> >>>1411 Honeysuckle Lane
> >>>Champaign, IL 61821
> >>>(217)356-9479
> >>>m.sheer@xxxxxxxxxxxxx
> >>>
> >>>----- Original Message -----
> >>>From: "Larry E." <videotech@xxxxxxxxxxxx>
> >>>To: <techassist@xxxxxxxxxxxxx>
> >>>Sent: Saturday, August 03, 2002 2:29 PM
> >>>Subject: [TechAssist] Philips 25TR12 C102
> chassis 25P606-OOAA
> >>>
> >>>
> >>>>Hi guys, got a 25P6 chassis totally dead, No
> relay click, nothing. I
> >>>>haven`t got the print for a
> >>>>P6, I`m using a Y1/Y4 because the power
> supply is close. I have standby
> >>>>B+ out of the regulator IC
> >>>>to collector of Q403 the 9volt standby switch
> but emitter is 2 volts
> >>>>instead of 6.8, if the P6
> >>>>chassis works the same way as the Y1/Y4 this
> means I don`t have my 5
> >>>>volt line for the micro.
> >>>>The micros are both marked IC345 but they are
> different, any ideas??
> >>>>
> >>>>Larry Eastman
> >>>>American TV & Electronics
> >>>>Crystal River Fl.
> >>>>
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=====
Walter Wood
Future Tech Home Center
2786 Hwy. 43 N.
Lawrenceburg Tn. 38464
931-829-3337
Fax 931-829-4044
mailto:wwood_38478@xxxxxxxxx
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