[TechAssist] Re: Philips CTV MD1.1 lightning
- From: "Stefaan Van Slycken" <vanslycken@xxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Mon, 9 Jun 2003 17:28:12 +0200
I could get a schematic, there are official philips dealers which sell them,
but they're about €30, and the customers don't want the repairs to cost that
much. I've never sold these sets, so to me it's not worth buying a schem.
When there's no cable signal with PAL, you get snow. I'm having a tough
time with this one, first i suspected the PAL decoder (TDA8366 - find
datasheet on www.semiconductors.philips.com ) because i had no RGB output
there, but it works fine in an other set.
Problem is, the only indications for voltages i find are +8 and +13, the
others just have measurement point numbers, so i'd like to have a schem or a
service manual to compare them with. Tough sets to work on...
TIA
Stefaan Van Slycken
Van Slycken Elektro, Waasmunster, BE.
----- Original Message -----
From: "Al L" <alleathe@xxxxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Monday, June 09, 2003 6:27 PM
Subject: [TechAssist] Re: Philips CTV MD1.1 lightning
Without a schematic, I would look for the 8 and 13 volt regs,but they might
be high because there is no load.Where would you get a schematic in
Belgium,if i may ask?Can you compare the crt voltages with a similar
crt?Thats where I would start for no brightness.
My advice may be all wrong if you use a different system there in
Belgium,since I once heard the screen is black in England with no signal,so
who knows?
May we have some details, as to size of set, and whether PAL system is
high bright without signal,or black? Good luck.al
Al Leatherman
224 Rt. 46
Mine Hill, NJ. 07803
973-361-5796
WWW.ALS-TV.NET
----- Original Message -----
From: "Stefaan Van Slycken" <vanslycken@xxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Monday, June 09, 2003 5:05 AM
Subject: [TechAssist] Philips CTV MD1.1 lightning
> This is a philips CTV set with MD1.1 chassis (which is a lot like MD1.2,
MD2.1 and the like), struck by lightning. It was switched off at the time.
> I get a green light, Horizontal and Vertical signals are present but
screen stays black. I get a DC voltage on the R, G and B taps of the CRT.
I put the tuner PCB (with IF, PAL decoder etc) in a good TV and it worked
fine, so that's not the cause. I notice that the "+8V" and "+13V" are 11V
and 15V respectively. I have no schematic or other voltage indications I
can refer to.
> Any help?
> TIA
> Stefaan Van Slycken
> Van Slycken Elektro - Waasmunster, Belgium.
>
> P.S. This is not the same set I posted about earlier.
>
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