GF-777 volune low issue

[jackkyxu]

I have an East Asian version of this GF-777, and basically it is working, and the mechanical parts seem good, BUT

1. the speaker volume is relateively lower than when it was new (which was about 35 years ago when I was kid)

2. the volume is EVEN lower when it switchs to play tape, barely audible with volume button turned all the way to the right. I have tried to clean the tape head with pure Alcohol, and it is the same no matterh which tape bay I am using


would appreciate if any input here

thanks

 

[floyd]

I would try recording a tape and pressing record then stop several times in a row. This will work the record bar and it will sometimes clear audio signal if there's intermittent contact in the record switch which is linked to all audio signals.

 

[jackkyxu]

I would try recording a tape and pressing record then stop several times in a row. This will work the record bar and it will sometimes clear audio signal if there's intermittent contact in the record switch which is linked to all audio signals.

hi thanks for your input and it wors a little bit

now I am starting to think it may be from the speaker since I can barely feel the vibration of membrane inside the speaker itself and there is almost no sound from the right set (two speakers)

I am visting to my parents home, and i do not have time for further trouble shooting this time

can you give some basic, easy-to-follow suggestion so I can remotely ask my parenets to check?

BTW, is the speaker easily got dead just for not being used for an extened time?

Thanks

 

[Radio raheem]

clean all switches with contact spray before you do anything else

 

[jackkyxu]

clean all switches with contact spray before you do anything else

would elaborate about this contact spray please ？ brand name, type. model?

i am new to this tape stuff and eletronics

Thanks

 

[Radio raheem]

is the 777 loud on the radio

clean all the switches with this

Servisol Super 10 Switch Contact Cleaning Lubricant Amplifier PA Hi-Fi Cleaner | eBay

Removes tarnish and other deposits. Increases surface area and reduces resistance. Supplied with extension tube to reach inaccessible areas. Sold and priced per can. 176ml Per Can. PRODUCT INFORMATION.

www.ebay.co.uk

if you really don;t know what you are doing i suggest taking her to someone who knows what they are doing

 

[jackkyxu]

is the 777 loud on the radio

louder than tape

but it is definitely NOT loud

 

[Radio raheem]

is the 777 loud on the radio

clean all the switches with this

Servisol Super 10 Switch Contact Cleaning Lubricant Amplifier PA Hi-Fi Cleaner | eBay

Removes tarnish and other deposits. Increases surface area and reduces resistance. Supplied with extension tube to reach inaccessible areas. Sold and priced per can. 176ml Per Can. PRODUCT INFORMATION.

www.ebay.co.uk

if you really don;t know what you are doing i suggest taking her to someone who knowa what they are doing

 

[Radio raheem]

is the 777 loud on the radio

clean all the switches with this

Servisol Super 10 Switch Contact Cleaning Lubricant Amplifier PA Hi-Fi Cleaner | eBay

Removes tarnish and other deposits. Increases surface area and reduces resistance. Supplied with extension tube to reach inaccessible areas. Sold and priced per can. 176ml Per Can. PRODUCT INFORMATION.

www.ebay.co.uk

if you really don;t know what you are doing i suggest taking her to someone who knowa what they are doing

 

[Radio raheem]

someone help this guy. i cant see well at the moment please wait for help.....do not use the radio as is.....clean all switches moving them up down 50 times let the unit dry and try again

Servisol Super 10 Switch Contact Cleaning Lubricant Amplifier PA Hi-Fi Cleaner | eBay

Removes tarnish and other deposits. Increases surface area and reduces resistance. Supplied with extension tube to reach inaccessible areas. Sold and priced per can. 176ml Per Can. PRODUCT INFORMATION.

www.ebay.co.uk

 

[jackkyxu]

i have repair experience with digital stuff and I can use iron to solder stuff like large capacitor resistor (not those tiny one from laptop/cellphone requiring heat gun)

 

[Radio raheem]

a

i have repair experience with digital stuff and I can use iron to solder stuff like large capacitor resistor (not those tiny one from laptop/cellphone requiring heat gun)

ahh ok so you're better than me by far......ok remove all switch caps and spray all switches with this and let the unit dry for at least an hour

Servisol Super 10 Switch Contact Cleaning Lubricant Amplifier PA Hi-Fi Cleaner | eBay

Removes tarnish and other deposits. Increases surface area and reduces resistance. Supplied with extension tube to reach inaccessible areas. Sold and priced per can. 176ml Per Can. PRODUCT INFORMATION.

www.ebay.co.uk

 

[jackkyxu]

a

ahh ok so you're better than me by far......ok remove all switch caps and spray all switches with this and let the unit dry for at least an hour

Servisol Super 10 Switch Contact Cleaning Lubricant Amplifier PA Hi-Fi Cleaner | eBay

Removes tarnish and other deposits. Increases surface area and reduces resistance. Supplied with extension tube to reach inaccessible areas. Sold and priced per can. 176ml Per Can. PRODUCT INFORMATION.

www.ebay.co.uk

thanks, but i am not able to trouble shoot issue from the analog curcuit

 

[Radio raheem]

thanks, but i am not able to trouble shoot issue from the analog curcuit

i can't even solder my friend so you are far better than me which is off to a good start lol