20 Most Recent Panasonic SC-HT830V System Questions & Answers

It may not be needed. Try shorting across this fuse protector IP1280 (looks like a resistor) on the power board. See more detailed solution I posted in this forum for a similar question.

I finally got some time to run this one down. I first took the "easy" solution and just ordered a new display and replaced it. No luck.

I traced the problem to the grid voltage going to the fluorescent display, it is a vacuum tube and requires grid heater voltage. The circuit goes through a switching transistor on the display board (board not available) through the DVD board (circuit wiring only) through a diode and fuse protector on the power board (also not available) to a transformer. The fuse protector was open, but the transformer was not putting out the right voltage. I replaced the transformer and jumpered the fuse protector and that solved the problem. I will need to put something in there for circuit protection as it may be a current limiting fuse protector but the part was not even in the parts.com parts list.

Cause: Temperature and/or voltage surge caused transformer and fuse protector to fail. Transformer rang OK, only display voltage affected.
My Solution: Replace transformer T1150 and Fuse Protector IP1280.

Possible cause of others who replaced the display board: Voltage surge may have taken out switching transistor Q7001 on display board. This transistor is turned on by QR7201 & QR7201 in a Darlington pair when PowerSave goes low. I did not under stand this function since the display is never completely off. It may dim it but I don't recall the display dimming. It may be non function on this model so jumpering E-C on Q7001 might solve the problem for others.

Parts replaced:
T1150 Transformer G4D2A0000216
IP1280 Fuse Protector K5G252AA0003

John

I would wire in an on/off toggle switch just AFTER the fuse that tends to blow out. Its the fuse discussed it another post here on fixay. Currently you can see it at the following address: http://www.fixya.com/support/t120423-display_front_dvd_player_not_workingThe fuse mentioned is specifically a fast acting .0 amp fuse from Little Fuse Inc PT# 0491.400MAT1 (FUSE, FAST ACT 125V FA 0.40 Amps). I just ordered this fuse from Digikey.com because my display stopped working. Everything else on the stereo still worked, just the display would not come on. So, installing a toggle switch just after the fuse would seem to me to be an easy way to turn the display on and off, and still have the stereo functional.

You can probally get one order in for it, But keep a eye out at thift stores , Where i live i always see differnt ones for all types of surround systems for a decent price,

Iit is on the power board, look for the transformer and the large black cylinder capacitors. See photo for location on the board itself.

Check little yellow fuse (ip1280) on the supply pcb. I believe it's rated @400ma.

Could be an easy fix. Try shorting across this fuse protector IP1280 (looks like a resistor) on the power board. See more detailed solution I posted in this forum for a similar question.

clean the heads of the VHS machine,, if they are clean,, check the video wire connections( the yellow one)

You can order the fuse online from the link given below.
http://www.rselectronics.com/Products/Fuses_Circuit_Breakers/Fuses/1_4_x_1-1_4_Time-Delay_Fuses.aspx?Refine=True&Page=1

You can buy fuses on line from RS Electronics.
Click on the link below.
http://www.rselectronics.com/Products/Fuses_Circuit_Breakers/Fuses/1_4_x_1-1_4_Time-Delay_Fuses.aspx

Try shorting across this fuse protector IP1280 (looks like a resistor) on the power board. See more detailed solution I posted in this forum for a similar question.

for as long as they have the same ampere rating that won't cause a problem

You may be able to fix it yourself. Search this forum or my profile for a more detailed solution to the same question worded differently, it is the one will a lot of photos. Try shorting across this fuse protector IP1280 (looks like a resistor) on the power board. See more detailed solution I posted in this forum for a similar question.

Here is an easy fix that may work. Try shorting across this fuse protector IP1280 (looks like a resistor) on the power board. See more detailed solution I posted in this forum for a similar question.

May be the grid power to the display. Try shorting across this fuse protector IP1280 (looks like a resistor) on the power board. See more detailed solution I posted in this forum for a similar question.

Try this. Try shorting across this fuse protector IP1280 (looks like a resistor) on the power board. See more detailed solution I posted in this forum for a similar question.